Crockpot Mac and Cheese Recipe

Prep Time: 10 min Cook Time: 2 hrs 30 min Total: 2 hrs 40 min Servings: 8
Creamy baked-style crockpot mac and cheese in a serving dish

Crockpot mac and cheese is the potluck legend: uncooked macaroni goes into the pot with milk, cheese, and butter, and two and a half hours later you're carrying a vat of creamy, custardy mac that stays warm through an entire party. No boiling water, no cheese sauce technique, no stovetop babysitting. The two rules that guarantee success — shred your own cheese (pre-shredded is coated in anti-caking starch that turns gritty) and check early, because every crockpot runs a little different on this one.

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Ingredients

  • 1 lb elbow macaroni, uncooked
  • 4 cups whole milk
  • 1 can (12 oz) evaporated milk
  • 4 tbsp butter, melted
  • 3 cups sharp cheddar, shredded from the block
  • 1 cup Monterey Jack, shredded
  • 1/2 cup grated parmesan
  • 1 tsp salt
  • 1/2 tsp dry mustard
  • 1/4 tsp black pepper
  • Pinch of cayenne (optional)

Instructions

  1. Butter or spray the crockpot insert well.
  2. Stir together the dry macaroni, whole milk, evaporated milk, melted butter, salt, dry mustard, pepper, and cayenne right in the pot.
  3. Add about two-thirds of the cheese and stir once more.
  4. Cover and cook on LOW 2 to 2 1/2 hours, stirring at the 1-hour and 90-minute marks, until the pasta is tender and the sauce is creamy.
  5. Stir in the remaining cheese, switch to WARM, and serve within the hour — it thickens as it holds.

Ingredient Substitutions

IngredientSubstituteNotes
Elbow macaroni Cavatappi or small shells Sturdier shapes hold up even better
Sharp cheddar Half cheddar, half Velveeta (8 oz) The ultra-smooth potluck version
Whole milk 2% milk Works; skip skim — the sauce needs the fat
Dry mustard 1 tsp Dijon Whisk into the milk

Storage & Reheating

Refrigerate up to 3 days. It firms up dramatically overnight — that's the pasta drinking the sauce, not a mistake.

Reheat with a good splash of milk over low heat, stirring until creamy again. Freezing works in a pinch (2 months) but the texture returns slightly grainy.

Frequently Asked Questions

Do I cook the macaroni first?
No — the dry pasta cooks right in the milk, and the starch it releases is what makes the sauce silky. Boiling it first gives you mush.
Why did my mac and cheese turn out grainy?
Pre-shredded cheese or too much heat. Shred from the block, cook on LOW only, and stir at the marked times so the edges don't scorch.
Can it hold on WARM for a party?
That's its superpower — up to 2 hours on WARM. Stir in a splash of warm milk if it tightens up.
Can I double this for a crowd?
Only in a 7-quart or larger pot, and add 30–45 minutes. In a standard 6-quart, one batch is already generous for 8.

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