Best Mac and Cheese Ever

INGREDIENTS:
1 (8-ounce) package elbow macaroni, cooked and drained
2 tablespoons butter
1 clove garlic, crushed
1 teaspoon onion powder
2 cups whole milk
1/4 cup all-purpose flour
6 cups sharp cheddar cheese
2 cups panko breadcrumbs
1/2 cup butter, melted

DIRECTIONS:
Preheat oven to 400 degrees. In a large pan, melt the 2 tablespoons of butter, add the garlic and cook until the garlic is softened.  Add the onion powder, then whisk in the flour and milk, then cook until slightly thickened.  Add three cups of the cheddar cheese and stir until melted in the mixture.  Toss the cheese mixture with the cooked pasta, salt and pepper to taste.  Stir the remaining grated cheese into the pasta.  Spoon into a large baking dish.
In a small bowl, stir together the breadcrumbs and melted butter.  I always like to add a bunch of freshly ground pepper and a sprinkling of sea salt to this mixture.  Spread over the pasta.  Bake in a preheated oven for 20-25 minutes, or until the breadcrumbs are golden brown.