This creamy, cheesy cauliflower gratin makes an impressive holiday casserole, but it is so delicious you’ll want to make it much more often. You'll love how the ingredients complement each other: the nutty flavor of the gruyere cheese is the perfect complement to the mild-flavored cauliflower, and using broth ensures the perfect texture. It’s simply one of the best side dishes you’ll ever make.
Heat the oven to 375°F. While the oven is heating, melt 2 tablespoons butter. Stir the melted butter, bread crumbs and 1/2 cup cheese in a medium bowl.
Melt the remaining butter in a 3-quart saucepan over medium heat. Add the flour and cook and stir for 2 minutes. Stir in the broth and cook and stir for 3 minutes or until the mixture is thickened. Stir in the mustard and cayenne pepper. Season to taste. Add the remaining cheese and cook and stir until the cheese is melted.
Place the cauliflower into an 11x8x2-inch baking dish. Pour the broth mixture over the cauliflower. Sprinkle with the bread crumb mixture. Cover the baking dish loosely with foil.
Bake for 25 minutes or until the cauliflower is tender-crisp. Uncover the baking dish.
Bake, uncovered, for 30 minutes or until the bread crumb mixture is golden brown and the cauliflower is tender. Let the cauliflower mixture cool for 10 minutes before serving.
This nutritional information refers to each serving of the entire recipe and not just the products used as ingredients.