I found this recipe in a Biquick pamphlet once upon a time. It comes together very quickly, and makes the simple ingredients quite tasty. You could use any sandwich meats and cheeses you wanted in the middle layer.
2 cups Bisquick
1 cup milk
Place half of the batter in the bottom of a greased 8x8.
Add meat/cheese choices. I used deli turkey, bacon (precooked) and shredded cheddar.
Top with the rest of the Bisquick batter.
Bake 30 minutes at 400 degrees, or until it is golden brown and center is set.
Sprinkle with some more cheese and bake 3 more minutes, or until cheese is melty.
Let stand at least 5 minutes before cutting.