Preheat oven to 375 degrees
Cook noodles “al dents” according to packaging , drain and set aside
In a large pot on medium heat, melt butter (do not allow it to brown)4.Add flour, stirring constantly. Mixture should thicken
When it thickens add half and half, heavy cream , garlic powder , onion powder , and black pepper-stir/ whisk well
Allow the mixture to simmer for 5 minutes on medium while stirring
Add cheese in portions of 8 ounces at a time , stirring and whisking while adding the cheese- let it simmer while stirring 5 minutes (your sauce should be smooth and creamy)
Stir in noodles
Add to greased casserole dish
Top with remaining white sharp cheddar cheese
Sprinkle bread crumbs
Bake 25-30 minutes or until browned to your liking