This Ground Beef, Potato & Tomato Gratin is a comforting and satisfying baked dinner made with tender potatoes, seasoned ground beef, juicy tomatoes, and plenty of melted cheese.
The ingredients are simple, the preparation is straightforward, and everything comes together in one beautiful casserole. It is perfect for a cozy family dinner or an easy weekend meal.
Recipe Overview
| Category | Details |
| Prep Time | 25 minutes |
| Cook Time | 25–30 minutes |
| Total Time | About 55 minutes |
| Servings | 6 |
| Cuisine | Comfort Food |
| Cooking Method | Oven-Baked |
| Difficulty | Easy |
Why You’ll Love This Recipe
This potato and ground beef gratin combines tender potatoes, savory seasoned beef, sweet tomatoes, and golden melted cheese in every bite.
The potatoes are partially cooked before baking, which helps them become perfectly tender without requiring a very long time in the oven.
The ground beef filling is flavored with garlic, onion, paprika, oregano, and tomato, giving the entire dish a rich and savory taste.
It is also an excellent family-friendly dinner because it uses simple ingredients that are easy to find.
Ingredients
For the Potato and Beef Base
| Ingredient | Amount |
| Large potatoes | 4–5, peeled and sliced |
| Ground beef | 500 g (1.1 lb) |
| Small onion | 1, finely chopped |
| Garlic | 2 cloves, minced |
| Red bell pepper | 1/2, finely diced |
| Tomato paste or tomato sauce | 2 tablespoons |
| Paprika | 1 teaspoon |
| Dried oregano or Italian seasoning | 1 teaspoon |
| Olive oil | 2 tablespoons |
| Salt | To taste |
| Black pepper | To taste |
For Assembly and Topping
| Ingredient | Amount |
| Cherry tomatoes | 1 cup, halved |
| Shredded cheese | 1 1/2 cups (about 150 g) |
| Fresh parsley | Chopped, for garnish |
You can use mozzarella, cheddar, Gouda, or a combination of melting cheeses.
Step-by-Step Instructions
1. Prepare the Potatoes
Peel the potatoes and slice them into medium-thick rounds.
Bring a large pot of salted water to a boil.
Carefully add the potato slices and cook for about 8–10 minutes.
The potatoes should become slightly tender but should still hold their shape. Do not overcook them because they will continue cooking in the oven.
Drain carefully and set aside.
2. Prepare the Ground Beef Filling
Heat the olive oil in a large skillet over medium heat.
Add the chopped onion, minced garlic, and diced red bell pepper.
Cook for approximately 3–4 minutes, stirring occasionally, until the vegetables begin to soften.
Add the ground beef, paprika, oregano, tomato paste, salt, and black pepper.
Cook for 6–8 minutes, breaking the beef apart with a wooden spoon as it cooks.
Continue cooking until the beef is browned and fully cooked.
Remove the skillet from the heat.
3. Preheat the Oven
Preheat your oven to 375°F (190°C).
Lightly grease a glass baking dish with a little olive oil or cooking spray.
An oval or rectangular baking dish works well for this recipe.
4. Assemble the Gratin
Arrange the precooked potato slices upright in the baking dish.
Between the potato slices, add portions of the seasoned ground beef mixture and halved cherry tomatoes.
Continue alternating the ingredients until the baking dish is filled.
Try to distribute the beef and tomatoes evenly throughout the dish so every serving has a good combination of ingredients.
5. Add the Cheese
Generously sprinkle the shredded cheese over the entire top of the gratin.
Mozzarella creates a stretchy, melty topping, while cheddar provides a stronger flavor. Gouda gives the dish a rich and creamy finish.
6. Bake
Place the uncovered baking dish in the preheated oven.
Bake for approximately 25–30 minutes, or until the cheese is completely melted, golden brown, and bubbling around the edges.
If you want a more deeply browned cheese topping, you can switch the oven to broil for the final 1–2 minutes. Watch carefully to prevent burning.
7. Garnish and Serve
Remove the gratin from the oven and let it rest for about 5 minutes.
Sprinkle freshly chopped parsley over the top.
Serve hot while the cheese is still melted and the potatoes are tender.
Best Tips
Slice the potatoes evenly so they cook at approximately the same rate.
Do not completely cook the potatoes during the boiling step. They should be partially tender because they will finish cooking in the oven.
Brown the ground beef thoroughly to develop a deeper savory flavor.
Avoid adding too much liquid to the beef mixture. A relatively thick filling works best because excess liquid can make the gratin watery.
Let the finished gratin rest for a few minutes before serving. This allows the layers to settle and makes it easier to serve.
Best Ingredient Options
For the ground beef, choose a lean or medium-fat variety depending on your preference. Medium-fat beef provides a richer flavor, while lean beef produces a lighter dish.
For the potatoes, Yukon Gold or other yellow-fleshed potatoes work particularly well because they become creamy while maintaining their shape.
Mozzarella is ideal for a stretchy cheese topping, while cheddar adds a stronger savory flavor.
Gouda is another excellent choice if you prefer a rich, smooth, and slightly nutty cheese flavor.
For the tomatoes, cherry tomatoes are convenient, but regular ripe tomatoes can also be sliced and used.
Recipe Variations
Add sliced zucchini or mushrooms between the potato layers for extra vegetables.
For a slightly spicy version, add a pinch of chili flakes or cayenne pepper to the beef mixture.
You can add a little grated Parmesan over the mozzarella before baking for an extra savory crust.
For a creamier gratin, add a small amount of cooking cream between the layers before adding the cheese.
You can also replace the oregano with Italian seasoning, thyme, or a combination of your favorite dried herbs.
What to Serve With
A simple green salad with a light vinaigrette pairs beautifully with this rich and cheesy gratin.
Steamed green beans or roasted vegetables can add freshness and balance to the meal.
Crusty bread is also delicious for soaking up the flavorful juices from the beef and tomatoes.
For a lighter side, serve the gratin with cucumber and tomato salad dressed with lemon juice and olive oil.
Make-Ahead Instructions
You can prepare the beef mixture and partially cook the potatoes several hours ahead of time.
Allow the ingredients to cool before assembling the gratin.
Cover the assembled dish and refrigerate it until you are ready to bake.
When ready, remove the dish from the refrigerator and let it sit at room temperature for about 15–20 minutes before placing it in the oven.
You may need to add a few extra minutes to the baking time if the dish is still cold.
Storage
Allow leftover gratin to cool before transferring it to an airtight container.
Store leftovers in the refrigerator for up to 3–4 days.
For food safety and best quality, keep refrigerated leftovers properly chilled.
Reheating
For individual portions, microwave the gratin until heated through.
For the best texture, reheat larger portions in a 350°F (175°C) oven until hot.
Cover loosely with foil during reheating if the cheese begins to brown too quickly.
Freezing
This gratin can be frozen, although the texture of the potatoes and tomatoes may change slightly after thawing.
Allow the dish to cool completely before transferring individual portions to freezer-safe containers.
Freeze for up to 2–3 months for best quality.
Thaw overnight in the refrigerator before reheating.
Common Mistakes to Avoid
Do not overcook the potatoes during the initial boiling stage. Potatoes that are too soft may break apart during assembly.
Avoid slicing the potatoes too thin because they can become mushy during baking.
Do not use excessive tomato sauce or liquid in the beef mixture, as this can make the finished gratin watery.
Avoid adding all the cheese too early if your oven runs hot. If necessary, cover the dish loosely or add part of the cheese halfway through baking.
Do not cut into the gratin immediately after removing it from the oven. A short resting period helps the dish hold together better.
Nutrition Estimate
Approximate nutrition per serving:
| Nutrient | Estimated Amount |
| Calories | 450–520 kcal |
| Protein | 27–32 g |
| Carbohydrates | 35–42 g |
| Fat | 23–28 g |
| Fiber | 5–6 g |
| Calcium | Varies by cheese |
| Sodium | Varies by added salt and cheese |
Nutrition information is an estimate and will vary depending on the exact ingredients, cheese, portion size, and cooking methods used.
Frequently Asked Questions
Can I use a different type of ground meat?
Yes. Ground chicken or turkey can be used instead of beef. Adjust the seasoning according to the meat you choose.
Do I have to precook the potatoes?
For this recipe, precooking is recommended. It ensures that the potatoes become tender within the relatively short baking time while preventing the cheese from becoming overly browned.
Can I use regular tomatoes instead of cherry tomatoes?
Yes. Use ripe tomatoes sliced into thin rounds or small pieces. If they are particularly juicy, remove some of the excess liquid before adding them.
What is the best cheese for this gratin?
Mozzarella, cheddar, and Gouda all work well. You can also combine two cheeses for a more complex flavor and texture.
Can I prepare this recipe ahead of time?
Yes. Assemble the dish, cover it, and refrigerate it until you are ready to bake. Allow it to sit at room temperature briefly before baking.
How do I prevent the gratin from becoming watery?
Keep the beef mixture relatively thick, avoid adding excess tomato liquid, and make sure the potatoes are well drained after boiling.
Final Thoughts
This Ground Beef, Potato & Tomato Gratin is an easy and comforting dinner that combines everything you want in a hearty baked meal: tender potatoes, flavorful ground beef, juicy tomatoes, and plenty of golden melted cheese.
It is simple enough for a weeknight dinner but satisfying enough for a weekend family meal. Serve it hot with a crisp salad or roasted vegetables for a complete and comforting dinner.