Preheat oven to 350 degrees. In large skillet, melt butter and sauté onion, pepper and mushroom (you may do this separately if you want to make different kinds of quiches). Mix eggs, milk, and spices. Slice the sausage links and cut bacon into bite-size pieces. Spray muffin tins. In each tin, add whatever fillings you would like (onion, pepper, mushroom, cheese, meat). Ladle in the egg until the fillings are just covered (not too close to the top). Bake about 10-15 minutes until fluffy and slightly brown. Remove from oven and serve warm!