Oven Baked 5-Ingredient Johnny Marzetti Casserole

There are some casseroles that feel like a warm hug from a Midwestern church cookbook, and this Oven Baked 5-Ingredient Johnny Marzetti Casserole is exactly that. It is hearty, saucy, and cheesy, with tender pasta, savory beef, and a rich tomato-mushroom sauce baked under a golden blanket of cheese.

What I love most about this recipe is how effortlessly it comes together. With just five main ingredients and one baking dish, you can create a crowd-pleasing dinner that tastes like you spent hours in the kitchen. It is the kind of meal that makes busy weeknights feel a little more special and turns simple pantry staples into something everyone at the table will love.

Why You’ll Love This Recipe

This casserole is the definition of hands-off comfort food. With just five main ingredients, it is budget-friendly, forgiving, and perfect for busy days when you want something warm without a lot of work.

The flavors are rich and satisfying. The marinara and cream of mushroom soup create a savory, velvety sauce, while the beef and pasta make it hearty enough to stand alone as a complete meal.

It is also wonderfully adaptable. You can add mushrooms, peppers, or extra cheese, swap the beef for sausage, or make it spicy with red pepper flakes.

Ingredients

1 pound rotini, elbow macaroni, or penne pasta
1 pound ground beef
1 jar (24 ounces) marinara or pasta sauce
1 can (10.5 ounces) cream of mushroom soup
2 cups shredded cheddar or mozzarella cheese, divided

Salt, black pepper, and garlic powder are considered free pantry staples.

Directions

Preheat your oven to 350°F (175°C). Lightly grease a 9×13-inch baking dish.
Cook the pasta in salted boiling water until al dente. Drain well.
In a large skillet over medium-high heat, cook the ground beef until browned. Drain excess grease. Season with salt, pepper, and garlic powder.
Stir in the marinara sauce and cream of mushroom soup. Simmer for 3 to 4 minutes.
Add the cooked pasta and 1 cup of cheese to the skillet. Stir until evenly combined.
Pour the mixture into the prepared baking dish. Sprinkle the remaining 1 cup of cheese over the top.
Bake for 20 to 25 minutes, until hot and bubbly and the cheese is golden.
Let rest for 5 minutes before serving.

Variations

Mushroom Johnny Marzetti: Add 1 cup sliced sautéed mushrooms to the beef mixture.
Spicy Version: Use hot Italian sausage instead of ground beef and add red pepper flakes.
Cheesy Double Cheddar: Stir in 1 cup cheddar and top with 1 cup mozzarella.
Vegetable Boost: Add diced bell peppers, zucchini, or frozen peas.
Gluten-Free: Use gluten-free pasta and gluten-free cream of mushroom soup.

Expert Tips

Do not overcook the pasta. It will soften more in the oven.
Drain the beef well so the casserole does not become greasy.
Use freshly shredded cheese for the creamiest melt.
Stir the pasta and sauce together before baking so every bite is flavorful.
Let it rest before serving so the slices hold together.

Storage and Reheating

Store leftovers in an airtight container in the refrigerator for up to 4 days. Reheat gently in the microwave or in a 350°F oven with a splash of sauce or broth. This casserole freezes well for up to 3 months. Thaw overnight in the refrigerator before reheating.

Frequently Asked Questions

Can I make this ahead of time? Yes. Assemble it, cover, and refrigerate for up to 24 hours. Add 10 minutes to the bake time.
Can I use a different pasta? Yes. Rotini, penne, shells, or elbow macaroni all work well.
Can I use ground turkey? Yes. Ground turkey or chicken works beautifully.
Why is my casserole dry? It may need more sauce. Stir in a splash of marinara or broth before baking.
Can I double this recipe? Yes. Use two baking dishes and rotate them halfway through baking.

What to Serve With This Dish

Garlic bread or crusty Italian bread
A crisp Caesar salad or green salad
Steamed broccoli or roasted asparagus
A glass of red wine or sparkling water
Freshly grated Parmesan for topping

Final Thoughts

This Oven Baked 5-Ingredient Johnny Marzetti Casserole is proof that you do not need a long list of ingredients or complicated techniques to create something truly delicious. It is hearty, cheesy, and wonderfully comforting, and it comes together with almost no effort. I hope it becomes a beloved staple in your kitchen.