Oven Baked 5-Ingredient Johnny Marzetti Casserole

 Oven Baked 5-Ingredient Johnny Marzetti Casserole

Oven Baked 5-Ingredient Johnny Marzetti Casserole is a hearty, cheesy pasta bake inspired by the classic Midwestern comfort-food casserole. Tender pasta, savory ground beef, tomato sauce, mushrooms, and melted cheese come together in one bubbling dish that’s perfect for a family dinner.

With only five main ingredients, this simplified version keeps the preparation easy while delivering plenty of rich, satisfying flavor. It’s especially convenient for busy weeknights and makes excellent leftovers.

Ingredients

• 1 pound ground beef
• 12 ounces elbow macaroni
• 24 ounces marinara or tomato pasta sauce
• 8 ounces sliced mushrooms
• 2 cups shredded mozzarella cheese

This recipe uses exactly 5 main ingredients. Salt, pepper, or cooking spray may be added optionally but are not counted.

How to Make Johnny Marzetti Casserole

1. Cook the Pasta

Preheat your oven to 375°F (190°C).

Cook the elbow macaroni according to the package directions until just shy of al dente.

Drain well and set aside.

The pasta will continue cooking in the oven, so avoid cooking it until completely soft.

2. Brown the Beef

While the pasta cooks, heat a large skillet over medium heat.

Add the ground beef and cook, breaking it apart with a spoon, until browned and no longer pink.

Drain any excess grease.

For food safety, ground beef should reach 160°F (71°C).

3. Add the Mushrooms and Sauce

Add the sliced mushrooms to the skillet with the cooked beef.

Cook for about 4–5 minutes, stirring occasionally, until the mushrooms begin to soften.

Pour in the marinara sauce and stir until everything is evenly combined. Simmer for another 2–3 minutes.

4. Combine With the Pasta

Add the cooked macaroni to the beef and sauce mixture.

Stir gently until the pasta is completely coated with the sauce.

Transfer half of the mixture to a lightly greased 9-by-13-inch baking dish.

5. Layer the Cheese

Sprinkle about half of the mozzarella over the first layer.

Add the remaining pasta mixture and spread it evenly.

Finish with the remaining mozzarella, covering the top.

6. Bake

Cover the casserole loosely with aluminum foil and bake for 20 minutes.

Remove the foil and continue baking for another 10–15 minutes, until the cheese is completely melted and bubbling.

For a more golden top, broil for 1–2 minutes at the end, watching carefully.

Let the casserole rest for about 5–10 minutes before serving.

Tips for the Best Johnny Marzetti Casserole

• Cook the pasta just shy of al dente so it doesn’t become mushy during baking.
• Drain the beef well to prevent an overly greasy casserole.
• Use a flavorful marinara sauce since it provides much of the seasoning.
• Don’t skip the resting time after baking; it helps the casserole hold together when served.
• Freshly shredded mozzarella melts especially well.

Easy Variations

If you don’t need to keep the recipe strictly five ingredients, add diced onion, green bell pepper, Italian seasoning, garlic, or Parmesan cheese.

Ground Italian sausage can replace some or all of the ground beef for a richer flavor.

For extra vegetables, add diced peppers, spinach, or additional mushrooms.

What to Serve With Johnny Marzetti Casserole

This casserole is filling enough to serve as a complete meal. A simple green salad or steamed green beans makes an excellent side.

Garlic bread or crusty Italian bread is also perfect for soaking up the tomato sauce.

Storage

Store leftover casserole in an airtight container or cover the baking dish tightly and refrigerate for up to 3–4 days.

Reheat individual portions in the microwave or reheat the entire casserole, covered, in a 350°F oven until hot throughout.

The casserole can also be frozen in portions for up to 2–3 months. Thaw overnight in the refrigerator before reheating.

Frequently Asked Questions

What is Johnny Marzetti casserole?

Johnny Marzetti is a classic American pasta casserole generally associated with the Midwest, traditionally combining pasta, ground beef, tomato sauce, cheese, and often vegetables such as mushrooms or onions. This is a simplified five-ingredient version.

Can I use a different pasta?

Yes. Rotini, penne, ziti, or another short pasta can replace elbow macaroni. Adjust cooking time according to the package directions.

Can I prepare this casserole ahead of time?

Absolutely. Assemble the casserole, cover it tightly, and refrigerate it until you’re ready to bake. Add extra baking time if it goes directly from the refrigerator into the oven.

Can I use cheddar instead of mozzarella?

Yes. Cheddar, Colby Jack, or a mozzarella-cheddar blend can be substituted for the mozzarella.

Final Thoughts

Oven Baked 5-Ingredient Johnny Marzetti Casserole is a simple, hearty pasta bake that brings together ground beef, tender macaroni, mushrooms, tomato sauce, and plenty of melted mozzarella.

It’s an easy comfort-food dinner with minimal preparation and plenty of leftovers, making it a great choice for busy family evenings.