Follow these easy steps to create the ultimate Crockpot Mac and Cheese:

1. Cook Pasta: Start by cooking the elbow macaroni for about 6-8 minutes in boiling water. Drain and set aside; it should be al dente since it will continue to cook in the crockpot.

2. Mix Cheese & Seasoning: In a large bowl, combine the shredded cheddar and mozzarella cheese, garlic powder, onion powder, mustard powder, and a pinch of salt and pepper.

3. Combine Ingredients: In a separate bowl, whisk together the milk, heavy cream, sour cream, and melted butter until well combined.

4. Layer in Crockpot: Begin layering by placing half of the cooked macaroni in the bottom of the crockpot, followed by half of the cheese mixture and half of the milk mixture. Repeat this process with the remaining macaroni, cheese mixture, and milk mixture.

5. Stir Gently: Using a spoon, gently stir the layers to combine just a bit without fully mixing, as this helps create that amazing creamy flavor.

6. Set Temperature: Cover the crockpot and set it to low for about 2 to 2.5 hours or on high for approximately 1 hour. Keep an eye on it!

7. Check Consistency: Once cooking time is complete, stir the mixture well and check for creaminess. If it seems thick, you can add a bit more milk to reach your desired consistency.

8. Add Toppings: If you’re using breadcrumbs or more cheese, sprinkle them on top and cover for an additional 10-15 minutes to allow the topping to crisp up and melt slightly.

9. Serve: After the time is up, serve your Crockpot Mac and Cheese hot. Enjoy the creamy, cheesy goodness!