Cut in florets (put in casserole). Cover and cook on high 8 to 10 minutes. Stir halfway through. Put following in a small casserole (separate from above).

2 tbsp. butter
1/4 c. celery
1 sm. chopped onion

Microwave 3 to 4 minutes. Add 1/4 cup bread crumbs, 1/4 cup grated cheese, 1/4 teaspoon salt. Sprinkle over cauliflower. Microwave uncovered 1 to 2 minutes on high until cheese begins to melt.