Unroll dough into a rectangle.
Place in ungreased casserole dish (13x9).
Press into bottom and up about one inch on the sides.
Make sure preforations and pressed shut.
Bake for 5 minutes at 375 degrees.
Remove from oven.
Evenly spoon both the pimientos and onion evenly over the crust (crust will look undercooked).
In a small bowl, combine the remaining ingredients, except the cheeses. Mix well.
Pour this mixture over the pimientos and onions.
Sprinkle both cheeses over the top, distributing evenly.
Bake for 20-30 minutes at 375 degrees.
Cut into squares.