Instructions

  1. Set oven to 350 degrees F.
  2. Grease a 13 x 9-inch baking dish.
  3. Cook the macaroni in boiling water until al dente (do not cook until very soft) drain, then place into a bowl.
  4. Place the milk, flour, onion salt and garlic powder in a 1-quart jar; cover tightly and shake vigorously for 1 minute; pour the mixture over the macaroni and add in 3-1/2 cups shredded cheddar cheese; mix thoroughly to combine, then spread into the baking dish.
  5. Sprinkle with breadcrumbs then remaining 1 cup of cheddar cheese.
  6. Drizzle 1/4 cup melted butter or margarine over the top.
  7. Bake uncovered for 45 minutes or until golden brown.