Breakfast Quiche Bake

1/2 - 1lb bacon or other meat, cooked & crumbled
1 cup bisquick
1 cup shredded cheese
2 cups milk
1 tsp ground mustard
1/2 tsp dried oregano leaves
6 eggs lightly beaten

1) Grease casserole pan
2) Mix all ingredients together, pour into casserole pan
3) Cover in fridge for at least 4 hours, no more than 24.
4) Heat at 350 uncovered for 1 hour (until knife comes out clean in the middle)