Name: Simple Ground Beef Casserole Recipe
Prep time: 10 min
Cook time: 25 min
Total time: 35 min
Cuisine: American
Ingredients: 1 pound uncooked penne; 1 tablespoon olive oil; 1 pound lean ground beef; 1/2 medium onion, chopped; 1 clove garlic, minced; 1.5 cups marinara sauce; Salt & pepper, to taste; 1.5 cups shredded cheddar cheese

I am so excited to share my Simple Ground Beef Casserole Recipe with you, a hearty and satisfying dish that feels like a warm hug on a plate. This casserole combines tender penne pasta, flavorful seasoned ground beef, rich marinara sauce, and gooey melted cheddar cheese, all baked to bubbly perfection. It’s one of those recipes I turn to when I want comfort food that’s straightforward to prepare but delivers big on taste every single time.

Why You’ll Love This Simple Ground Beef Casserole Recipe

What I adore most about this recipe is its incredible flavor profile. The savory ground beef mingles beautifully with the tangy, tomato-rich marinara, while the cheddar cheese adds that perfect creamy, melty finish. It’s a balanced harmony of flavors that satisfies without overwhelming your palate. Every bite feels familiar and comforting but in such a fulfilling way that you keep coming back for more.

Beyond the taste, I love how easy and approachable this dish is. The prep is straightforward, and the steps are simple enough for even busy weeknights—no complicated techniques, just wholesome ingredients coming together effortlessly. It’s perfect for when you want something warm and homemade but don’t have hours to spend in the kitchen. Plus, it works wonderfully for a variety of occasions, whether it’s a cozy family dinner, casual get-together, or even a crowd-pleasing potluck.

Ingredients You’ll Need

A black pan with a grey handle sits on a white marbled surface. In the left image, the pan holds cooked brown ground meat mixed with small white pieces of onion spread evenly inside. In the right image, the same cooked meat and onion layer is topped with a large dollop of thick, bright red tomato sauce placed in the center of the pan. Photo taken with an iphone --ar 4:5 --v 7

The beauty of this Simple Ground Beef Casserole Recipe lies in its simplicity, with a handful of essential ingredients that each bring their own special touch. From the pasta providing the perfect base to the cheese that creates that irresistible golden crust, every element is purposeful and meaningful.

1 pound uncooked penne: I prefer penne because its shape holds onto the sauce nicely, giving you flavor in every bite.
1 tablespoon olive oil: This adds a subtle richness and helps brown the ground beef perfectly without sticking.
1 pound lean ground beef: Choose lean for a good balance of flavor and less grease; it also browns well and blends beautifully with the sauce.
1/2 medium onion, chopped: The onion brings sweetness and depth to the beef mixture, making it irresistibly savory.
1 clove garlic, minced: Garlic adds that classic aromatic punch that livens up the entire dish.
1.5 cups marinara sauce: I use my favorite store-bought or homemade sauce—you want something thick and flavorful to bind everything together.
Salt & pepper to taste: Simple seasoning that’s absolutely essential to balance and highlight the flavors.
1.5 cups shredded cheddar cheese: Sharp cheddar is my go-to for that amazing cheesy crust and creamy melt inside.

Directions

Step 1: Preheat your oven to 400 degrees Fahrenheit and place the oven rack in the middle position. Grease a 9×13-inch baking dish thoroughly—I usually use a spray like Pam to make cleanup easier.

Step 2: Bring a large pot of salted water to a boil. Cook the penne pasta for about 10 minutes, aiming for it to be slightly underdone so it won’t turn mushy when baked later.

Step 3: In a large skillet, heat the olive oil over medium-high heat. Add the ground beef and chopped onion, breaking the meat apart as it cooks. Sauté for about 10 minutes until the beef is nicely browned and the onions are softened.

Step 4: Stir in the minced garlic and cook for another minute, just until fragrant. If there’s any excess fat in the pan, carefully spoon it out now to keep the dish from feeling greasy.

Step 5: Pour the marinara sauce into the beef mixture and stir well to combine. Let it warm through for a few minutes on low heat. Taste and season with salt and pepper as needed, since this step really brings out the flavors.

Step 6: Drain the pasta and transfer it to your prepared baking dish. Pour the beef and sauce mixture over the pasta and toss gently until combined. Sprinkle a generous and even layer of shredded cheddar cheese on top. If you want it extra cheesy, mix half a cup of cheese into the pasta mixture before topping.

Step 7: Bake uncovered for 10 minutes until the cheese is melted and bubbling. If you like a golden, browned top (which I totally do), switch your oven to broil for 2–3 minutes—just watch it closely so it doesn’t burn.

Step 8: Remove from the oven and serve immediately while the casserole is warm, cheesy, and utterly irresistible.

Servings and Timing

This Simple Ground Beef Casserole Recipe makes about 6 hearty servings, perfect for sharing with family or saving leftovers for the week. The prep time is around 10 minutes, mostly chopping and browning the beef. Cooking the pasta and sautéing the beef mixture together takes about 20 minutes. Baking and optional broiling add another 10 to 15 minutes, bringing your total time to roughly 35 minutes from start to finish. There’s no resting time required—you want to dig in right away, while it’s warm and melty!

How to Serve This Simple Ground Beef Casserole Recipe

A bowl of pasta with three main layers is shown. The bottom layer is cooked penne pasta, light yellow with a smooth texture, filling most of the bowl. On top of the pasta is a layer of browned ground meat mixed with small bits of tomato sauce, giving a chunky and slightly red-brown look. The top layer is melted orange cheese drizzled unevenly over the meat and pasta, slightly stretchy and shiny. Small green herb bits are scattered on top for color. A fork rests on the right side inside the bowl. The bowl is white and sits on a white marbled surface. Photo taken with an iphone --ar 4:5 --v 7

When I serve this casserole, I love pairing it with a crisp, green salad dressed with a light vinaigrette to balance the rich, cheesy flavors. Something with fresh, crunchy veggies or even a tangy coleslaw really brightens up the plate. Garlic bread or crusty rolls are also classic companions—you can never go wrong with something to sop up any extra sauce.

For garnishes, I like a sprinkle of fresh chopped parsley or basil on top to add a pop of color and freshness. It’s a simple touch that instantly elevates the presentation and invites people to dig in. Portion-wise, serving a scoop that’s about a cup to a cup and a half feels just right for dinner, especially with sides on the plate.

To drink, I’m a fan of medium-bodied red wines like Merlot or Zinfandel, which complement the savory tomato and beef flavors. If you prefer something non-alcoholic, sparkling water with a twist of lemon or even a lightly sweetened iced tea is refreshing. This casserole is perfect for casual weeknight meals, family dinners on chilly evenings, or even bringing to a potluck since it travels and reheats beautifully. I always recommend serving it warm, right out of the oven, so the cheese is gooey and delightful.

Variations

I love how adaptable this Simple Ground Beef Casserole Recipe is! If you want to mix it up, try swapping the penne for other pasta shapes like rigatoni, rotini, or even elbow macaroni—they all work wonderfully and change the texture just enough to keep things interesting. For a bit more veggie power, you can stir in mushrooms, bell peppers, or spinach with the onions to sneak in some extra nutrition and flavor.

If you need to cater to dietary preferences, you can easily make this gluten-free by using gluten-free pasta. For a vegetarian twist, try substituting the ground beef with plant-based crumbles or cooked lentils to maintain the hearty texture. I’ve even experimented with different cheeses—mozzarella for a milder creaminess or pepper jack if you want a little kick. Baking in individual ramekins also makes for a fun presentation and portion control.

Feeling adventurous? Instead of the stovetop, you can brown the beef mixture in an Instant Pot or slow cooker and then combine everything before baking. Different cooking methods bring subtle variations in texture and flavor, and I encourage you to play around until you find your perfect style.

Storage and Reheating

Storing Leftovers

I always recommend storing leftovers in an airtight container to keep the casserole moist and flavorful. It will stay good in the refrigerator for up to 3 to 4 days. When storing, make sure to press a piece of plastic wrap directly on the surface or cover tightly with foil to prevent the cheese from drying out or absorbing other fridge odors.

Freezing

This casserole freezes very well, which makes it a great make-ahead meal. To freeze, let it cool completely, then transfer portions or the entire dish into freezer-safe containers or heavy-duty zip-top bags. It can keep in the freezer for up to 2 months without losing its charm. When you’re ready to enjoy, thaw it overnight in the fridge before reheating to help it warm evenly.

Reheating

The best way to reheat is in the oven at 350 degrees Fahrenheit until warmed through, usually about 15 to 20 minutes depending on the portion. Cover the dish loosely with foil to prevent the cheese from over-browning or drying out. Avoid microwaving if you can, as that can sometimes make the cheese rubbery and the pasta unevenly heated. If you do microwave, reheat in short bursts and stir in between for more consistent warmth.

FAQs

Can I use a different type of pasta for this recipe?

Absolutely! While penne is my favorite for this casserole, other pasta shapes like rigatoni, rotini, or elbow macaroni also work wonderfully. Just make sure to cook them slightly underdone so they don’t become mushy when baked.

Is it possible to make this recipe ahead of time?

Yes! You can prepare the pasta and beef mixture a day in advance, then assemble and bake it when you’re ready to eat. Storing the components separately keeps the pasta from absorbing too much sauce. This is a great way to save time on busy days.

How can I make this dish healthier?

Using lean ground beef is a great start, and adding extra vegetables like spinach, bell peppers, or mushrooms gives it more nutrients and fiber. You can also swap out regular pasta for whole wheat or gluten-free varieties depending on your dietary needs.

Can I double this recipe for a larger crowd?

Definitely! Just double all ingredients and use a larger baking dish—such as two 9×13 pans or a bigger casserole dish. Keep an eye on baking times, as a larger volume might need a few extra minutes in the oven to heat through.

What can I serve with this casserole to round out the meal?

I love pairing it with a fresh green salad, garlic bread, or roasted vegetables. For drinks, a medium-bodied red wine or a sparkling water with lemon makes a lovely accompaniment, balancing the rich flavors perfectly.

Conclusion

I truly hope you give this Simple Ground Beef Casserole Recipe a try soon. It’s one of those dishes that’s both comforting and incredibly satisfying, perfect for feeding hungry friends or family without fuss. From its rich, cheesy flavor to the ease of preparation, it has become a reliable favorite in my kitchen—I’m confident it will be in yours, too!