Slow Cooker Baked Mostaccioli Served in a Crock

 Slow Cooker Baked Mostaccioli Served in a Crock

This Slow Cooker Baked Mostaccioli Served in a Crock brings all the comforting flavors of a classic baked pasta dish straight to the slow cooker. Tender pasta, hearty meat sauce, and plenty of melted cheese come together for an easy family dinner that feels like something special.

Instead of boiling the pasta separately and baking everything in the oven, this recipe lets the slow cooker do most of the work. It’s perfect for busy weeknights, Sunday dinners, potlucks, or anytime you’re craving a warm and cheesy Italian-inspired meal.

Ingredients

• 1 pound ground beef
• 1 pound mostaccioli or penne pasta
• 1 jar (24 ounces) marinara sauce
• 1 can (14.5 ounces) diced tomatoes, undrained
• 2 cups shredded mozzarella cheese
• ½ cup grated Parmesan cheese
• 1 small onion, finely chopped
• 2 cloves garlic, minced
• 1½ cups beef broth or water
• 1 teaspoon Italian seasoning
• ½ teaspoon salt
• ¼ teaspoon black pepper

How to Make Slow Cooker Baked Mostaccioli

1. Brown the Beef

Heat a large skillet over medium heat. Add the ground beef and chopped onion.

Cook until the beef is browned and no longer pink, breaking it apart with a spoon as it cooks. Drain any excess grease.

Add the minced garlic and cook for about 30 seconds, just until fragrant.

2. Build the Sauce

Stir the marinara sauce and diced tomatoes into the cooked beef mixture.

Add the Italian seasoning, salt, and black pepper. Stir well so everything is evenly combined.

3. Add Everything to the Crock

Transfer the meat and sauce mixture to the slow cooker.

Add the uncooked mostaccioli pasta and pour in the beef broth or water. Stir gently until the pasta is coated with the sauce.

Make sure the pasta is mostly covered by the liquid and sauce.

4. Slow Cook

Cover and cook on LOW for about 2½–3½ hours, stirring once or twice during cooking if possible.

Start checking the pasta around the 2½-hour mark. Cooking times vary between slow cookers, and pasta can become too soft if left cooking for too long.

The pasta should be tender but still have some texture.

5. Add the Cheese

Once the pasta is tender, sprinkle the mozzarella and Parmesan evenly over the top.

Cover again and cook for about 15–20 minutes, or until the cheese is completely melted and gooey.

6. Serve

Turn off the slow cooker and let the mostaccioli rest for about 5 minutes.

Scoop the cheesy pasta directly from the crock and serve hot.

Tips for the Best Slow Cooker Mostaccioli

Don’t overcook the pasta. Unlike a slow-cooked roast, pasta only needs a few hours. Begin checking it early.

Stir carefully. Gently stirring once during cooking helps distribute the sauce and liquid without breaking up the pasta.

Keep the lid closed. Every time you remove the lid, heat escapes and the cooking time can increase.

Add cheese at the end. This keeps the mozzarella creamy and prevents it from becoming tough or overcooked.

Easy Variations

You can substitute ground Italian sausage for some or all of the ground beef for a richer flavor.

For a meatless version, leave out the ground beef and add extra mushrooms, zucchini, or bell peppers.

If you enjoy extra cheese, add a layer of ricotta between the pasta and mozzarella for a more traditional baked-pasta feel.

What to Serve With Mostaccioli

This cheesy slow cooker pasta pairs wonderfully with garlic bread, toasted Italian bread, Caesar salad, roasted vegetables, or a simple green salad.

A sprinkle of fresh parsley or basil over each serving also adds a fresh finish.

How to Store Leftovers

Allow leftover mostaccioli to cool before transferring it to airtight containers.

Refrigerate for up to 3–4 days. Reheat individual portions in the microwave, adding a splash of water or marinara sauce if the pasta seems dry.

You can also freeze portions in freezer-safe containers for up to 2–3 months. Thaw overnight in the refrigerator before reheating.

Frequently Asked Questions

Can I put dry pasta directly into the slow cooker?

Yes. This recipe is designed for uncooked mostaccioli. Make sure there is enough sauce and liquid around the pasta, and begin checking it early so it doesn’t become mushy.

Can I use penne instead of mostaccioli?

Absolutely. Penne is a very good substitute because it has a similar shape and cooking time.

Can I prepare this ahead of time?

The meat sauce can be prepared ahead and refrigerated. For the best pasta texture, add the uncooked pasta when you’re ready to begin slow cooking.

Can I use a different cheese?

Yes. Provolone, Monterey Jack, or an Italian cheese blend can be used alongside or instead of some of the mozzarella.

Final Thoughts

This Slow Cooker Baked Mostaccioli Served in a Crock is the kind of comforting dinner that makes busy evenings easier. Hearty ground beef, tomato sauce, tender pasta, and plenty of melted cheese come together in the slow cooker for a warm and satisfying meal.

It’s simple enough for a weeknight but cozy enough for Sunday dinner, potlucks, and family gatherings. Serve it with garlic bread and a crisp salad for an easy Italian-inspired meal everyone can enjoy.