If the peppers don’t stand straight then either gently chop off the lopsided part of the bottom or make a bed of foil and let the wobbly pepper stand on it
With a small sharp knife cut a circle around the red bell pepper stem to remove the tops. Remove the seeds, wash and dry the pepper. The pepper tops can be used as lids or chopped and added to the filling.
Prep the yellow peppers by slicing in half and removing the seeds and insides.
If you are preparing for a party, the peppers can be stuffed and refrigerated a day ahead and then baked before serving.
Add 2 tbsp. cream and cheese to the white sauce for a sinfully creamier, satiny smooth sauce.