Broccoli-Cauliflower Gratin

• 2 packages fresh broccoli and cauliflower flowerets - the 16 ounce size
• 1 1/2 cups mayonnaise 
• 1 cup (4 ounces) shredded Cheddar cheese 
• 1 (3-ounce) package shredded Parmesan cheese
• 4 green onions, sliced
• 2 tablespoons Dijon style mustard
• 1/4 teaspoon ground red pepper
• 3 tablespoons seasoned breadcrumbs 

1. Preheat oven to 350 degrees F.
2. Lightly grease a 2 quart baking dish.
3. Cover the flowerets and steam over boiling water for 6 to 8 minutes or until crisp-tender. 
4. Drain well.
5. Arrange flowerets in the prepared baking dish. 
6. Stir together mayonnaise and next 5 ingredients. 
7. Spoon over flowerets. 
8. Sprinkle with breadcrumbs.
9. Bake at 350° for 20 to 25 minutes or until golden.