Slow-Cooker Pizza Casserole

This slow-cooker pizza casserole recipe is an easy, hands-off, and incredibly satisfying comfort food meal made right in your crockpot. It’s loaded with classic pizza flavors, tender pasta, gooey cheese, and savory beef—all slow-cooked to perfection!

If you’re wondering what to make with ground beef, try my Baked Ziti or Cheesy Lasagna Soup next for more cozy dinner inspiration.

a slow cooker filled with cheesy pizza casserole and a serving spoon

Why you’ll love it

I absolutely love anything that combines pizza flavors with pasta, and this slow-cooker pizza casserole is one of my ultimate comfort meals. It’s hearty, cheesy, and packed with all the familiar toppings you crave—without needing to order takeout.

The slow cooker does all the heavy lifting here. The flavors have time to develop beautifully, giving you that rich, layered taste that feels like it came straight out of a pizzeria. Plus, the pasta soaks up all that delicious sauce, making every bite extra flavorful.

Another reason I keep coming back to this recipe? It’s incredibly convenient. You can prep everything quickly, toss it into the slow cooker, and let it do its thing while you go about your day. It’s perfect for busy weeknights, family dinners, or even casual gatherings.

And let’s not forget the cheese—melty mozzarella throughout and on top makes this dish irresistibly gooey and satisfying!

What you’ll need

Rigatoni pasta – large tube pasta works best because it holds onto all that delicious sauce and cheese
Ground beef – adds hearty, savory flavor and makes this casserole filling
Onion and garlic – classic aromatics that build a flavorful base
Pizza sauce – brings that signature pizza taste; use your favorite brand
Cream of mushroom soup – adds creaminess and helps bind everything together
Mozzarella cheese – shredded and melted for that classic cheesy stretch
Pepperoni slices – for that authentic pizza topping flavor
Fresh basil or arugula – optional, but adds a fresh, vibrant finish

ingredients for slow cooker pizza casserole in prep bowls

Tools for this recipe

Here are a few kitchen tools I like to use when making this dish:

• A reliable slow cooker (crockpot) for even cooking
• A large skillet for browning the beef
• A sturdy wooden spoon for stirring
• Measuring cups for accuracy

How to make slow-cooker pizza casserole

This is a quick overview with step-by-step guidance. Full ingredients & instructions are in the recipe card below.

Cook the beef mixture
Start by browning the ground beef and chopped onion in a skillet over medium heat until fully cooked. Add the garlic and sauté for about 30 seconds until fragrant. Drain excess fat if needed.

Layer the casserole
In your slow cooker, spread a small amount of pizza sauce on the bottom. Add a layer of uncooked rigatoni, followed by the beef mixture, more sauce, cream of mushroom soup, mozzarella, and pepperoni.

Repeat and finish
Repeat the layers until all ingredients are used, finishing with a generous layer of mozzarella and pepperoni on top.

Slow cook to perfection
Cover and cook on low for 4–5 hours or on high for 2–3 hours, until the pasta is tender and everything is hot and bubbly.

Garnish and serve
Top with fresh basil or arugula if desired, and serve warm!

slow cooker pizza casserole ready to serve

Pro tips

• Don’t overcook the pasta – Keep an eye on the cooking time to avoid mushy pasta
• Use freshly shredded cheese – It melts better and gives a smoother texture
• Layer evenly – This ensures every bite has a balance of pasta, meat, and cheese
• Grease your slow cooker – Helps prevent sticking and makes cleanup easier

Substitutions and variations

One of the best things about this recipe is how customizable it is!

• Swap ground beef for ground turkey or chicken for a lighter version
• Add veggies like bell peppers, mushrooms, or olives for extra flavor
• Use spicy pepperoni or add chili flakes for heat
• Try different cheeses like cheddar or provolone for a twist
• Use whole wheat or gluten-free pasta if needed

What to serve with this pizza casserole

This dish is hearty on its own, but I love pairing it with a few simple sides:

• Garlic bread or cheesy breadsticks
• A crisp green salad with a light vinaigrette
• Roasted vegetables for added nutrition

Leftovers and storage

Leftovers store beautifully, making this a great meal prep option.

• Refrigerator: Store in an airtight container for up to 4 days
• Reheating: Warm in the microwave or on the stovetop with a splash of water or sauce
• Freezing: You can freeze it, but keep in mind the pasta texture may soften slightly upon thawing

I hope you love this slow-cooker pizza casserole as much as I do! It’s one of those comforting, crowd-pleasing recipes that never fails. If you try it, I’d love to hear how it turned out!