1 bag (16 ounces) frozen broccoli florets, thawed and drained
1 bag (16 ounces) frozen cauliflower, thawed and drained
1 cup mayonaise
3 tablespoons dijon mustard
1/2 teaspoon salt
1/2 cup shredded cheddar cheese

Preheat oven to 375 degrees.  Combine the first 5 ingredients until veggies are evenly coated.  Pour into a greased 1 1/2 quart baking dish.  Sprinkle with cheese.  Bake 25-30 minutes or until heated through and cheese is melted.  Great as a side dish or as a topping on baked potatoes.