Mom's Alfredo Sauce

Why I Love This Recipe
This is my mom's too:) I love her!
Ingredients You'll Need
1 stick real butter
2 cloves garlic; minced
1 quart half and half
1 egg
1 C parmesan cheese
2 C mozzarella cheese
Directions
Melt the butter in a saucepan and add the garlic.
Cook until the turns a golden brown.
Beat the egg with about 1 C of the 1/2 and 1/2; add the remainder of the 1/2 and 1/2 to the butter and garlic; keep the heat low!
Add the egg and 1/2 and 1/2 mixture and the cheeses.
Cook over low heat until all cheese has melted; stir frequently.
DO NOT let it boil.
Add salt and pepper to taste.