Instructions
Cook the macaroni:
Boil the pasta according to package instructions, but stop just before al dente—it will finish cooking in the crockpot. Drain and set aside.
Make the roux:
In a bowl, whisk together the melted butter and flour until smooth and lump-free.
Mix with milk:
Pour the milk into the crockpot, then slowly whisk in the butter-flour mixture to form a creamy base.
Combine all ingredients:
Add the cooked macaroni, cheddar, mozzarella, salt, pepper, garlic powder, onion powder, and paprika to the slow cooker. Stir until the pasta is well coated.
Cook on low:
