THE BEST Macaroni and Cheese

1 16oz. pkg. elbow macaroni
1/4 cup butter
2 cups Velveta cheese, cubed
2 cups sharp shredded cheddar cheese
2 1/2 cups 2% or whole milk
1 egg

Cook macaroni according to package directions, drain. Cut butter into pieces and place in bottom of 13x9 pan. Place half of the macaroni on top of butter. Sprinkle with 1 cup Velveta cubes and 1 cup cheddar cheese. Beat egg with milk. Pour half of milk mixture over macaroni layer. Repeat layer of macaroni, cheeses and egg mixture.

Bake at 350 F for 15 min. Remove from oven; stir until well blended. Return to oven and bake an additional 20 min. or until golden on top. People will eat this till it is gone. Great for parties and family dinners. Leftovers are good reheated in microwave (if you have any)!