Slow Cooker Mac and Cheese
Recipe Tested & Approved by Mia Hartwell
Every recipe is developed, cooked, and tested by Mia in a real home kitchen using everyday ingredients to ensure reliable, repeatable results.
Ultra-creamy macaroni and cheese cooked entirely in the slow cooker — no boiling the pasta separately. A rich, cheesy crowd-pleaser that frees up your stovetop and oven.
By Mia HartwellUpdated November 13, 2025
Developed using tested cooking methods — cook to the temperatures given and adjust times to your equipment.
Why you'll love this recipe
- Ultra-creamy mac and cheese with no boiling
- Frees up the stovetop and oven
- Feeds eight — perfect for gatherings
- Vegetarian comfort food
Slow Cooker Mac and Cheese
2 hr 10 min totalServes 8
Nutrition (per serving)
Values are estimates. See our disclaimer for details.
- Calories
- 520kcal
- Protein
- 22g
- Carbs
- 48g
- Fat
- 27g
- Fiber
- 2g
- Sugar
- 6g
Step-by-Step Instructions
- 1
Lightly grease the slow cooker. Add the uncooked macaroni, whole milk, evaporated milk, melted butter, mustard powder, garlic powder, salt, and pepper. Stir.
- 2
Stir in most of the cheddar, the Gruyere, and the Parmesan, reserving some cheddar for the top.
- 3
Cover and cook on LOW for 1.5-2.5 hours, stirring every 30-40 minutes, until the pasta is tender and the sauce is creamy.
- 4
Stir in the reserved cheddar in the last 15 minutes.
- 5
Check often near the end — slow cookers vary and pasta can overcook. Serve once tender and creamy.
Pro Tips for the Best Results
- Stir every 30-40 minutes so the pasta cooks evenly and doesn't stick to the sides.
- Evaporated milk adds richness and helps keep the sauce from breaking.
- Check early and often — pasta can go from perfect to mushy quickly in a slow cooker.
- Shred the cheese yourself for the smoothest melt.
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How to Cook Slow Cooker Mac and Cheese
New to this dish? Follow along with the detailed guide below — we break down each stage so you get perfect results the very first time.
Combine everything raw
Add the uncooked macaroni straight to the slow cooker with the milks, butter, and most of the cheese. The pasta cooks directly in the dairy, absorbing flavor and creating a creamy sauce — no separate pot of boiling water needed.
Stir and watch closely
Stir every 30-40 minutes so the pasta cooks evenly and doesn't clump or stick to the sides. This is the one slow-cooker recipe that needs attention: pasta can go from tender to mushy fast, so check early and often.
Finish cheesy
Evaporated milk keeps the sauce rich and stable, and stirring in reserved cheddar at the end adds a fresh cheesy finish. Serve as soon as the pasta is tender and the sauce is creamy for the best texture.
Storage & Make-Ahead
Refrigerate leftovers in an airtight container for up to 4 days; reheat gently with a splash of milk to restore the creaminess. Best enjoyed fresh.
Serving Suggestions
This slow cooker mac and cheese pairs beautifully with a crisp green salad, crusty bread, or your favorite grain. Add a simple side of roasted vegetables for a complete, satisfying dinner the whole family will enjoy.
Frequently Asked Questions
Can I use only regular milk?+
Yes, but evaporated milk makes it richer and more stable. If using all regular milk, watch the consistency and add a little more cheese for body.
Why did my mac and cheese get grainy or mushy?+
Grainy usually means too-high heat or pre-shredded cheese; mushy means overcooked. Cook on LOW, stir, and check early.
Can I make it ahead?+
It's creamiest fresh. Reheat leftovers gently with a splash of milk to revive the sauce.
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