Slow Cooker Mac and Cheese

Creamy Slow Cooker Mac and Cheese made without boiling pasta. Just mix, cook, and enjoy rich, velvety cheese sauce every time.

This Slow Cooker Mac and Cheese is creamy, cheesy, and cozy comfort food made almost effortlessly. It’s my go-to when I want rich, homemade mac and cheese without babysitting the stove. Just mix, set, and let the slow cooker do the work. It’s perfect for holidays, potlucks, or an easy weeknight dinner.

The magic of this recipe is how the pasta cooks right in the sauce, soaking up all that cheesy goodness. You’ll love how hands-off it is since you only need to stir once midway. The sauce stays creamy and smooth, never dry or curdled.

It’s also easy to customize. You can change up the cheese blend, add a little spice, or stir in extras like cooked bacon or broccoli. It’s simple comfort food that feels special every time.

Quick Bites About This Recipe

Skill Level: Easy for beginners and family-friendly
Swaps: Try Monterey Jack, Fontina, or Gruyere instead of Colby Jack.
Make Ahead: Mix and refrigerate the base up to 12 hours before cooking
Freezer Friendly: Freeze cooked mac and cheese for up to 2 months
Variations & Substitutions: Add cooked bacon, diced ham, or steamed broccoli before serving

Slow Cooker Mac and Cheese Ingredients

Cavatappi or elbow macaroni: Both work great. Cavatappi holds the sauce in its twists, while elbow macaroni gives that classic mac and cheese feel.
Whole milk: Adds creamy texture and flavor. Don’t use skim milk or it can get grainy.
Evaporated milk: Keeps the sauce extra smooth and velvety as it cooks.
Butter: Adds richness and helps the sauce blend together.
Dijon mustard: Balances the richness and adds depth without overpowering.
Garlic powder: A small touch that makes the sauce taste more rounded.
Smoked paprika: Adds gentle smokiness and beautiful color.
Salt and pepper: Season to taste for balance and flavor.
Sharp cheddar: The bold cheese flavor that defines mac and cheese.
American cheese: Melts beautifully and makes the sauce ultra creamy.
Colby Jack: Adds mild flavor and a smooth melt to balance the sharp cheddar.

How to Make Slow Cooker Mac and Cheese

Lightly grease the slow cooker insert so nothing sticks.
In a large bowl, whisk together milk, evaporated milk, melted butter, Dijon mustard, garlic powder, smoked paprika, salt, and pepper until smooth.
Add the uncooked pasta and stir to coat every piece with the milk mixture.
Top with the cheddar, American, and Colby Jack cheeses but don’t stir yet. This helps the cheese melt evenly.
Cover and cook on LOW for 2 hours. Stir once halfway through to mix the melted cheese into the sauce.
When the pasta is tender and the sauce looks smooth, give it a good stir.
Switch the slow cooker to WARM and let it sit for 10 to 15 minutes so the sauce thickens before serving.

Storing and Reheating (If There’s Any Leftovers!)

Refrigerate: Store in an airtight container up to 4 days.
Freeze: Freeze in portions for up to 2 months. Thaw in the fridge before reheating.
Reheat: Warm on the stove or in the microwave with a splash of milk to bring back the creaminess.

Recipe Tips and Notes

• Stir only once while cooking to keep the pasta from breaking.
• Use freshly shredded cheese for the smoothest sauce.
• A pinch of cayenne or red pepper flakes adds a nice kick.
• Once the pasta is tender, switch to WARM to prevent curdling.

Slow Cooker Mac and Cheese

Courtney

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Ingredients

  

• 16 oz cavatappi or elbow macaroni, uncooked
• 2 1/2 cups whole milk 590 ml
• 1 can evaporated milk 375 ml
• 2 tablespoons butter melted
• 1/2 tablespoon Dijon mustard 7 g
• 1/2 teaspoon garlic powder
• 1/2 teaspoon smoked paprika
• 1/2 teaspoon salt or to taste
• 1/4 teaspoon pepper
• 2 1/2 cups sharp cheddar cheese shredded, 280 g
• 1 1/2 to 2 cups American cheese chopped, 170 to 225 g
• 1 cup Colby Jack cheese shredded, 110 g

Instructions

 

• Lightly grease the slow cooker insert.
• In a large bowl, whisk together milk, evaporated milk, melted butter, Dijon mustard, garlic powder, smoked paprika, salt, and pepper until smooth.
• Stir in the uncooked pasta until fully coated.
• Add the cheddar, American, and Colby Jack cheeses on top without stirring.
• Cover and cook on LOW for 2 hours, stirring once halfway through.
• When the pasta is tender and sauce creamy, stir well.
• Switch the slow cooker to WARM and let rest for 10 to 15 minutes before serving.

Notes

Substitutions: Use Monterey Jack or Gruyere for Colby Jack or add a pinch of cayenne for spice.
Storage: Store up to 4 days in the fridge or 2 months in the freezer.
Reheat: Warm gently with a splash of milk for best texture.

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