This Cheesy Ground Beef and Mashed Potato Casserole is the ultimate comfort food, combining savory seasoned ground beef, creamy mashed potatoes, and a generous layer of melted golden cheese. Baked until bubbly and lightly browned, this hearty casserole is perfect for family dinners, cozy weekends, or a satisfying make-ahead meal.
Inspired by classic cottage pie, this easy ground beef casserole features a flavorful tomato-seasoned beef filling topped with fluffy mashed potatoes and plenty of melted cheese. Fresh herbs add a beautiful finishing touch, while the oven creates a delicious golden crust that makes every serving irresistible.
If you’re looking for an easy ground beef dinner recipe made with simple ingredients, this cheesy beef and potato bake is a wonderful choice.
Recipe Overview
| Detail | Information |
| Recipe Name | Cheesy Ground Beef and Mashed Potato Casserole |
| Cuisine | American-inspired comfort food |
| Prep Time | 25 minutes |
| Cook Time | 30–35 minutes |
| Total Time | Approximately 1 hour |
| Servings | 6–8 |
| Oven Temperature | 375°F (190°C) |
| Cooking Method | Stovetop and oven-baked |
Why You’ll Love This Recipe
Rich and savory flavor: Seasoned ground beef creates a delicious filling that pairs perfectly with creamy mashed potatoes.
Extra cheesy topping: Melted cheddar and mozzarella create a golden, bubbly layer that makes this casserole especially satisfying.
Creamy and comforting: Smooth mashed potatoes balance the savory beef filling for a delicious combination of textures.
Perfect for family dinners: This generous casserole feeds a crowd and works well for weeknight meals, potlucks, and weekend gatherings.
Easy to customize: Add vegetables, change the seasonings, or use your favorite melting cheese to make the recipe your own.
Great for meal preparation: Prepare the casserole ahead of time and refrigerate or freeze portions for convenient meals later.
Ingredients
For the Ground Beef Filling
| Ingredient | Quantity |
| Ground beef | 2 lb (900 g) |
| Medium yellow onion, diced | 1 |
| Garlic cloves, minced | 3 |
| Tomato paste | 2 tablespoons |
| Crushed tomatoes or tomato sauce | 1 cup (240 ml) |
| Beef broth | 1/2 cup (120 ml) |
| Olive oil | 1 tablespoon |
| Paprika | 1 teaspoon |
| Italian seasoning | 1 teaspoon |
| Salt | To taste |
| Black pepper | To taste |
| Frozen peas and carrots (optional) | 1 cup |
For the Creamy Mashed Potato Topping
| Ingredient | Quantity |
| Potatoes, peeled and chopped | 2 lb (900 g) |
| Butter | 4 tablespoons |
| Milk, warmed | 1/2 cup (120 ml) |
| Sour cream (optional) | 1/4 cup |
| Salt | To taste |
| Black pepper | To taste |
| Garlic powder (optional) | 1/2 teaspoon |
For the Cheesy Topping
| Ingredient | Quantity |
| Shredded cheddar cheese | 1 1/2 cups |
| Shredded mozzarella cheese | 1 cup |
| Dried parsley or fresh chopped parsley | 1 tablespoon |
Step-by-Step Instructions
Step 1: Prepare the Potatoes
Peel the potatoes and cut them into evenly sized chunks.
Place them in a large pot and cover with cold water. Add a pinch of salt and bring to a boil.
Cook for approximately 15–20 minutes, or until the potatoes are fork-tender.
Drain thoroughly and return the potatoes to the warm pot. Add the butter, warmed milk, sour cream if using, salt, black pepper, and garlic powder.
Mash until smooth and creamy. Avoid overmixing, as this can make the potatoes sticky.
Set aside while preparing the beef filling.
Step 2: Cook the Ground Beef
Heat the olive oil in a large skillet over medium-high heat.
Add the diced onion and cook for 3–4 minutes until softened. Stir in the minced garlic and cook for another 30 seconds.
Add the ground beef and break it into small pieces with a wooden spoon. Cook until thoroughly browned, with no pink areas remaining.
Drain excess fat if necessary.
Stir in the tomato paste, paprika, Italian seasoning, salt, and black pepper. Cook for approximately one minute to develop the flavors.
Add the crushed tomatoes and beef broth. Stir well and allow the mixture to simmer for 5–8 minutes until the sauce thickens slightly.
If using frozen peas and carrots, stir them into the beef mixture and cook for another 2–3 minutes.
The filling should be moist and flavorful without being overly watery.
Step 3: Preheat the Oven
Preheat your oven to 375°F (190°C).
Lightly grease a deep 9 × 13-inch baking dish with butter or cooking spray.
Step 4: Assemble the Casserole
Spread the cooked ground beef mixture evenly across the bottom of the prepared baking dish.
Spoon the creamy mashed potatoes over the beef filling.
Carefully spread the potatoes into an even layer, covering the beef completely. Use the back of a spoon or a spatula to create small ridges on the surface, which can become lightly golden during baking.
Sprinkle the shredded cheddar and mozzarella evenly over the mashed potatoes.
Finish with dried or freshly chopped parsley for extra color and flavor.
Step 5: Bake Until Golden and Bubbly
Place the casserole in the preheated oven and bake uncovered for approximately 25–30 minutes, or until the cheese has melted and the edges are bubbling.
For a more deeply golden topping, switch on the broiler for 1–3 minutes at the end of cooking. Watch carefully because the cheese can brown quickly.
If the casserole was assembled while cold from the refrigerator, allow additional baking time and check that the center is thoroughly hot.
Step 6: Rest and Serve
Remove the casserole from the oven and let it rest for 5–10 minutes before serving.
This helps the filling settle and makes it easier to scoop neat portions.
Sprinkle with additional fresh parsley if desired and serve warm.
Best Tips for the Perfect Casserole
Drain the potatoes well. Excess water can make the mashed potato topping runny. Let the potatoes steam briefly after draining before adding the butter and milk.
Use flavorful ground beef. Browning the beef properly develops a richer taste and gives the filling a satisfying texture.
Thicken the beef mixture. Allow the tomato sauce and broth to simmer until the filling is moist but not watery.
Make the mashed potatoes creamy. Warm milk and softened butter blend more easily into the potatoes and create a smooth topping.
Choose a good melting cheese. Cheddar provides a bold flavor, while mozzarella creates a stretchy, melted finish.
Let the casserole rest. Waiting a few minutes after baking helps the layers settle and improves serving.
Avoid overbaking. Once the cheese is golden and bubbling and the center is hot, the casserole is ready.
Best Ingredient Options
Ground beef: Lean or moderately fatty ground beef works well. Drain excess fat after browning to prevent the casserole from becoming greasy.
Potatoes: Russet potatoes create a fluffy mash, while Yukon Gold potatoes produce a naturally buttery and creamy texture.
Cheese: Cheddar, mozzarella, Monterey Jack, or a combination of melting cheeses can be used.
Tomato sauce: Crushed tomatoes provide texture, while smooth tomato sauce creates a more uniform beef filling.
Beef broth: Low-sodium broth allows you to control the salt level more easily.
Milk: Whole milk creates richer mashed potatoes, while lower-fat milk produces a lighter result.
Recipe Variations
Garlic Parmesan Beef Casserole: Add freshly grated Parmesan and roasted garlic to the mashed potatoes for extra savory flavor.
Vegetable Beef Casserole: Add mushrooms, corn, peas, carrots, or finely diced bell peppers to the ground beef filling.
Extra-Cheesy Potato Casserole: Mix a small amount of cheddar into the mashed potatoes before adding the final cheese topping.
Spicy Ground Beef Casserole: Add chili flakes or a little cayenne pepper to the beef mixture for gentle heat.
Creamy Beef and Potato Bake: Stir a little cream cheese or sour cream into the mashed potatoes for a richer texture.
Gluten-Free Version: Use gluten-free broth and check the labels of all seasonings and packaged ingredients.
Low-Carbohydrate Alternative: Replace the mashed potatoes with mashed cauliflower and adjust the moisture so the topping remains thick enough to spread.
What to Serve With Cheesy Beef and Potato Casserole
Fresh green salad: A crisp salad with lettuce, cucumber, tomatoes, and vinaigrette balances the richness of the cheese and potatoes.
Steamed green beans: Lightly seasoned green beans make an easy vegetable side dish.
Roasted broccoli: Roasted broccoli adds texture, color, and a delicious savory flavor.
Glazed carrots: Slightly sweet carrots complement the rich ground beef filling.
Garlic bread: Serve a small portion of warm garlic bread to accompany the savory sauce.
Cucumber and tomato salad: A refreshing salad adds freshness and contrast to the warm, cheesy casserole.
Make-Ahead Instructions
You can prepare this casserole up to 24 hours before baking.
Cook the beef filling and mashed potatoes, then assemble the casserole in a suitable baking dish. Allow the components to cool appropriately before covering and refrigerating.
Store at 40°F (4°C) or below and bake within 24 hours for the best quality.
When ready to cook, preheat the oven to 375°F (190°C). Bake until the cheese is golden and the center reaches 165°F (74°C). A chilled casserole will require additional baking time.
For the best cheese texture, you can add the shredded cheese just before baking if preferred.
How to Store Leftovers
Allow the casserole to cool slightly and divide it into shallow, airtight containers.
Refrigerate within two hours of cooking, or within one hour if the surrounding temperature exceeds 90°F (32°C).
Store at 40°F (4°C) or below and consume within 3–4 days.
Individual portions are convenient for quick lunches and easy dinners throughout the week.
How to Reheat the Casserole
Oven Method
Preheat the oven to 350°F (175°C).
Place the desired portion in an oven-safe dish and cover loosely with foil to prevent the cheese and potatoes from drying out.
Heat until the center reaches 165°F (74°C). Individual portions may take approximately 15–20 minutes, while larger portions will require longer.
Remove the foil during the final few minutes if you want to refresh the golden cheese topping.
Microwave Method
Place an individual serving on a microwave-safe plate.
Cover loosely and heat in short intervals, checking the center and rotating the plate as needed.
If the potatoes seem dry, add a small splash of milk before reheating.
Make sure the center reaches 165°F (74°C) before serving.
Can You Freeze Cheesy Ground Beef and Potato Casserole?
Yes, this casserole can be frozen for convenient future meals.
For the best results, freeze it in individual portions or as a complete casserole in a freezer-safe dish. Wrap tightly to protect against freezer burn.
You can freeze the casserole before baking or after it has been cooked and cooled.
Maintain a freezer temperature of 0°F (-18°C). For the best flavor and texture, use frozen portions within approximately 2–3 months.
Thaw in the refrigerator before reheating when possible. Heat until the center reaches 165°F (74°C).
Mashed potatoes may change texture slightly after freezing, but stirring them gently after reheating can help restore some of their creaminess.
Common Mistakes to Avoid
Using watery mashed potatoes: Drain the potatoes thoroughly before mashing. Excess moisture can make the topping too soft.
Leaving too much liquid in the beef filling: Simmer the beef sauce until slightly thickened to prevent a watery casserole.
Adding cold milk to the potatoes: Warm milk blends more easily and helps create a smoother mashed potato topping.
Overmixing the potatoes: Excessive mixing can make mashed potatoes gummy. Mash just until creamy.
Using too little seasoning: Taste the beef filling and potatoes before assembling, adjusting the salt, pepper, garlic, and herbs as needed.
Adding cheese too early during extended baking: If preparing the casserole well in advance or baking it from cold, monitor the cheese and cover loosely with foil if it begins browning too quickly.
Skipping the resting time: Letting the casserole rest for 5–10 minutes makes it easier to serve without the layers falling apart.
Nutrition Estimate
The following values are approximate and depend on the ground beef, cheese, potatoes, milk, and portion size used.
| Nutrient | Estimated Amount per Serving |
| Calories | 450–600 kcal |
| Protein | 28–38 g |
| Total Carbohydrates | 30–45 g |
| Total Fat | 22–32 g |
| Saturated Fat | 9–15 g |
| Fiber | 3–6 g |
| Sugars | 4–8 g |
| Sodium | 600–1,000 mg |
These estimates assume the casserole serves eight people. Larger portions or additional cheese may increase the calories, fat, and sodium.
Frequently Asked Questions
What is the difference between this casserole and cottage pie?
Both dishes feature a savory ground meat filling topped with mashed potatoes. Cottage pie traditionally uses beef and does not necessarily include the generous layer of melted cheese featured in this recipe.
Can I use leftover mashed potatoes?
Yes. Leftover mashed potatoes are an excellent shortcut. If they are very thick, mix in a little warm milk before spreading them over the beef filling.
Can I use ground beef without tomato sauce?
Yes. Replace the tomato sauce with additional beef broth and thicken the filling with a small amount of cornstarch slurry if necessary. The flavor will be more like a traditional savory cottage pie.
How do I keep the casserole from becoming watery?
Drain the potatoes well and simmer the beef filling until the sauce thickens. Avoid adding too much broth or leaving excess liquid in the skillet.
What is the best cheese for this recipe?
Cheddar gives the casserole a rich, savory flavor, while mozzarella creates a stretchy topping. Combining the two provides a delicious balance.
Can I make this casserole without vegetables?
Absolutely. The optional peas and carrots can be omitted. The beef filling will still be flavorful with onion, garlic, tomato, and seasonings.
How long does the casserole last in the refrigerator?
Properly stored leftovers generally last 3–4 days in the refrigerator at 40°F (4°C) or below.
Can I freeze the casserole after baking?
Yes. Let it cool, portion it into freezer-safe containers, and freeze promptly. Thaw in the refrigerator and reheat until the center reaches 165°F (74°C).
Can I prepare this casserole the night before?
Yes. Assemble the casserole, cover it, and refrigerate it for up to 24 hours before baking. Add extra cooking time if it goes into the oven cold.
What should I do if the cheese browns too quickly?
Cover the dish loosely with aluminum foil and continue baking until the center is thoroughly hot. Remove the foil toward the end if needed to finish the topping.
Final Thoughts
This Cheesy Ground Beef and Mashed Potato Casserole is a comforting homemade dinner featuring savory beef, creamy potatoes, and a delicious golden cheese topping.
It’s easy to prepare, customizable with your favorite ingredients, and ideal for family dinners, meal preparation, or feeding a hungry crowd.
Serve it warm with a fresh salad or roasted vegetables for a complete meal. With its rich flavor, creamy texture, and bubbling cheese, this ground beef and potato casserole is sure to become a family favorite.