Breakfast Bacon Pie

2 cups Bisquick baking mix
1/2 teaspoon salt
1 pound bacon, fried, crumbled
1/3 cup chopped onions
2 cups shredded Swiss cheese
4 cups milk
8 eggs
1/4 teaspoon pepper

Grease two 10-inch pie plates. Sprinkle bacon, cheese, and onion evenly into the 2 dishes. Beat remaining ingredients until smooth and pour evenly into the dishes. Bake both at 400 degrees F for about 30 minutes or until tops are golden. Let plates stand for 5 minutes before cutting.