- Prepare the Macaroni: Cook the elbow macaroni according to the package instructions but undercook by 1-2 minutes. Drain and set aside. 
- Layer the Cheese: Place half of the shredded cheddar cheese at the bottom of the Crockpot. 
- Add the Pasta: Add the cooked pasta over the layer of cheese in the Crockpot. 
- Pour the Milk and Butter: Add the evaporated milk, whole milk, and cubed butter. Stir gently to combine. 
- Add the Remaining Cheese and Seasonings: Top with the remaining shredded cheddar cheese and season with salt and pepper. 
- Cook: Cover the Crockpot and cook on low for 2-3 hours, stirring every 30 minutes. Check for creaminess and adjust if needed by adding a little more milk. 
- Serve: Once creamy and smooth, serve and enjoy!