Ground Beef and Spinach Casserole

Name: Ground Beef and Spinach Casserole
Prep time: 20 min
Cook time: 40 min
Total time: 1 h
Yield: 4 servings
Ingredients: 1 pound ground beef; 2 cups fresh spinach, chopped; 1 medium onion, diced; 2 cloves garlic, minced; 1 cup ricotta cheese; 1 cup shredded mozzarella cheese; 1 cup shredded cheddar cheese; 1 teaspoon Italian seasoning; Salt and pepper to taste; 2 cups marinara sauce; 12 lasagna noodles, cooked and drained

Highlighted under: Cozy Kitchen Recipes

I love making casseroles because they not only fill the belly but also warm the heart. This Ground Beef and Spinach Casserole is a family favorite for its comforting flavors and simple preparation. With hearty ground beef, nutritious spinach, and a melty cheese topping, it’s perfect for weeknight dinners. We enjoy it paired with crusty bread and a side salad, making for a fulfilling meal. Plus, leftovers are just as tasty, giving me an effortless lunch option the next day.

Created by

Emily

Last updated on 2026-01-20T12:41:27.939Z

When I first made this casserole, I was surprised by how quickly it came together. Ground beef cooks so fast, and adding spinach not only boosts the nutrition but also adds a lovely color contrast. I usually sauté the beef with onions and garlic to enhance the flavor. This step really matters because it infuses the dish with a depth that makes you come back for seconds.

One of my favorite parts of this recipe is the cheesy topping. As it bakes, the cheese creates a perfect crust that contrasts beautifully with the soft layers underneath. I've found that using a mix of cheddar and mozzarella gives the best flavor and melt. If you're feeling adventurous, throw in some Italian herbs for an extra kick!

        Why You'll Love This Recipe
        Hefty ground beef carries all the flavors beautifully
Fresh spinach adds nutritional value without being overpowering
A melty cheese topping brings everything together
Perfect for meal prep with easy reheating

      

Building Layers for Flavor

When assembling the layers of the casserole, it's essential to ensure an even distribution of flavors. Start with a generous coating of marinara sauce at the bottom of the dish to prevent the noodles from sticking. Since lasagna noodles can dry out, don't hesitate to add an extra drizzle of sauce between layers. This will not only maintain moisture but will also enhance the overall flavor profile with every bite.

Each layering sequence should be carefully considered. Using half of the ricotta cheese as the first layer allows for a creamy texture that contrasts beautifully with the ground beef. Moreover, the melting cheese on top acts as a delicious sealing layer, encapsulating the flavors beneath. I recommend patting down each layer gently to avoid excessive air pockets, which can potentially lead to uneven cooking.

Perfecting the Bake

Baking time is crucial for achieving the ideal casserole texture. Covering the dish with aluminum foil for the first 25 minutes helps to create steam, which keeps the casserole moist and allows the flavors to meld together. The final 15 minutes of uncovered baking ensures that the cheese gets bubbly and turns a desirable golden brown. Keep a close eye during this stage; you want that melty, slightly crispy top without burning the edges.

If you find yourself in a hurry, consider checking the casserole a few minutes early. Every oven is different, and visual cues such as a golden top and bubbling edges are great indicators that it’s ready to come out. If the cheese hasn’t browned yet but the casserole has bubbled sufficiently, a quick broil for 1-2 minutes can add that desired finish. Just be sure to watch it closely to avoid burning.

Ingredients

Ingredients for Ground Beef and Spinach Casserole

1 pound ground beef
2 cups fresh spinach, chopped
1 medium onion, diced
2 cloves garlic, minced
1 cup ricotta cheese
1 cup shredded mozzarella cheese
1 cup shredded cheddar cheese
1 teaspoon Italian seasoning
Salt and pepper to taste
2 cups marinara sauce
12 lasagna noodles, cooked and drained

Instructions

Prepare the Beef Mixture

In a large skillet over medium heat, add the ground beef, diced onion, and minced garlic. Cook until the beef is browned and the onion is translucent, about 8 minutes. Drain excess fat if necessary.

Add Spinach and Seasoning

Stir in the chopped spinach and Italian seasoning. Cook until the spinach wilts, about 3 minutes. Season with salt and pepper to taste.

Assemble the Casserole

In a large baking dish, layer cooked lasagna noodles, half of the ricotta cheese, half of the beef mixture, half of the marinara sauce, and a third of the mozzarella and cheddar cheese. Repeat the layers ending with marinara sauce and the remaining cheese on top.

Bake the Casserole

Cover the dish with aluminum foil and bake in a preheated oven at 375°F (190°C) for 25 minutes. Remove the foil and bake for an additional 15 minutes or until the cheese is bubbly and golden.

Cool and Serve

Allow the casserole to cool for 10 minutes before slicing. Serve warm and enjoy!

Pro Tips

For extra flavor, try mixing in some red pepper flakes or using a different cheese blend. You can also substitute ground turkey or chicken for a lighter version.

Storing and Reheating

This casserole makes for excellent leftovers and can be stored easily. Once cooled, cover the dish tightly with plastic wrap or foil and refrigerate for up to three days. If you want to extend its life, it can also be frozen. Just ensure it’s well-wrapped and can last up to three months in the freezer without compromising the quality.

When you're ready to reheat, the best method is to bake it at 350°F (175°C) until heated through, usually about 30-40 minutes if frozen. If refrigerated, it will take about 20 minutes. If you find it too dry during reheating, a splash of marinara sauce can bring back moisture and keep it creamy.

Variations to Explore

This casserole is highly versatile and can accommodate various dietary needs or preferences. For a healthier twist, consider using ground turkey or chicken as a leaner protein alternative. You can also substitute the ricotta cheese with cottage cheese or a vegan cream cheese to cater to dietary restrictions. Adding other vegetables such as zucchini or mushrooms can increase the nutritional value and add different textures.

If you’re short on time, pre-cooked lasagna noodles can be a great shortcut. They absorb the flavors but require less cooking time than traditional noodles. Additionally, feel free to experiment with different cheese blends – a combination of Gouda and Parmesan can add a delightful depth of flavor that pairs beautifully with the ground beef.

Questions About Recipes

→ Can I use frozen spinach instead of fresh?

Yes, you can use frozen spinach. Just make sure to thaw and drain it thoroughly before adding it to the mixture.

→ Can I prepare this casserole in advance?

Absolutely! You can assemble the casserole a day ahead and refrigerate it until ready to bake.

→ What can I serve with this dish?

This casserole pairs well with a simple salad and crusty bread for a complete meal.

→ How do I store leftovers?

Store any leftovers in an airtight container in the refrigerator for up to 3 days. Reheat in the microwave or oven.