I got this recipe from the Food Network website (link). I didn’t follow the directions exactly as you see them below. Here are the changes I made to the recipe: instead of three eggs I used just one, and instead of using a slow cooker I baked mine at 375 degrees for 45 minutes. It was excellent!
2 C. uncooked elbow macaroni
4 T. (1/2 stuck) butter, cut into pieces
2 1/2 C. (about 10 ounces) grated sharp Cheddar cheese
3 eggs, beaten
1/2 C. sour cream
1 (10 3/4-ounce) can condensed Cheddar cheese soup
1/2 tsp. salt
1 C whole milk
1/2 tsp. dry mustard
1/2 teaspoon black pepper
Boil the macaroni in a 2 quart saucepan in plenty of water until tender, about 7 minutes. Drain. In a medium saucepan, mix butter and cheese. Stir until the cheese melts. In a slow cooker, combine cheese/butter mixture and add the eggs, sour cream, soup, salt, milk, mustard and pepper and stir well. Then add drained macaroni and stir again. Set the slow cooker on low setting and cook for 3 hours, stirring occasionally.