Homemade biscuit mix:

5c flour
1/4c baking powder
1tsp salt
2tbsp sugar
1c fat (lard, butter, or margarine)

Mix dry ingredients together, then mix in the fat until it has a fine crumb texture. Store in a sealed bag or container in the freezer indefinitely.

Scalloped hashbrowns:
2c milk
1/2c margarine
1/2c flour
1 onion
2 cartons hashbrowns
Salt and pepper to taste

Soak the potatoes for 5 minutes instead of 12, drain, and spread in greased glass pan.
Put the rest of the ingredients in the blender, pour over potatoes evenly. Bake at 350 - 45m to 1hr.