Egg-Asparagus-Mushroom Casserole - cooking recipe

Ingredients

2 Tbsp. butter
3 Tbsp. flour
1/2 tsp. prepared brown mustard
1 can mushroom soup
1 large can green asparagus tips
4 hard-cooked eggs, sliced
1/2 c. rice flakes, crushed before measuring
1/4 c. grated American cheese

Preparation

Melt butter; add flour and blend well.
Combine mustard with soup and add to flour mixture. Cook slowly, stirring constantly until thick.