Crockpot Mac and Cheese
| 2 cups uncooked elbow macaroni |
| 4 tablespoons butter |
| 2 1/2 cups grated sharp cheddar cheese |
| 3 eggs (optional) |
| 1/2 cup sour cream |
| 1 (10 3/4 ounce) can condensed cheddar cheese soup |
| 1/2 teaspoon salt |
| 1 cup whole milk |
| 1/2 teaspoon dry mustard |
| 1/2 teaspoon black pepper |