Sauté chopped green pepper in butter for about 6 minutes.
Add soup (condensed), mushrooms, and pimentos.
In a 2-qt casserole or larger, combine all the ingredients. If it appears too thick, add a little milk.
Place in a 350 degree oven for 45 minutes to 1 hour or until bubbling and slightly brown on the edge. Garnish with green pepper rings and serve with croutons
Croutons
Estimate 2 slices of bread per person. Toast 12 or more slices of white bread in broiler until golden brown. Remove from oven and cut into cubes. Place in separate dish for buffet serving.