Preheat oven to 350 degrees. Steam broccoli, cauliflower and carrots until tender. Combine onion, mayonnaise, horseradish, salt, and pepper. ... Combine cracker or bread crumbs with butter. Sprinkle over top. Bake for 10 to 15 minutes until heated thoroughly.
Ingredients: 9 (crumbs .. flowerets .. mayonnaise .. onion .. slices ...)