Melt 3 TBL butter and sauté the onion until soft, stir in flour with a fork, when it is well mixed and starting to just turn golden in color, you may want to add more butter if it is to stiff. Stir in the milk rapidly, stirring while you pour. Stir over med heat until it comes to a slow boil and starts to thicken, turn heat to low. Add the cheese, mustard, Worcestershire, Tabasco and powdered chicken mix (this is the salt) Stir until the cheese is melted.
Put cooked Macaroni in large mixing bowl, pour in cheese sauce and mix until pasta is coated. Pour into a shallow 2 quart casserole sprayed with Pam. Melt remaining butter and toss with bread crumbs, sprinkle light coating over Mac and cheese, don’t make it thick. Bake at 350 about 25-30 minutes or until bubbly and top starts to crisp and brown.
Chopped bell pepper or chili pepper with onions
˝ panko ˝ parmesan cheese topping
Chopped cooked broccoli or frozen peas in it
Chopped crisp bacon on top and or in it
Diced cooked ham in it
˝ jalapeno jack ˝ sharp cheddar
Extra grated cheese in crumb topping