Preheat oven to 350ยบ and grease a casserole dish with cooking spray. In a large saucepan, melt butter. Add soup, eggs, mayo, cheddar, Parmesan, and mustard and season with salt and pepper.
Layer broccoli on bottom of baking dish. Pour saucepan mixture and sprinkle all over with RITZ.
Bake until golden and bubbling, 30 minutes.
Garnish with parsley and serve.
Recipe by The Best Video Recipes for All at https://recipes-for-all.com/broccoli-cheese-casserole/