1 large head cauliflower (6 c.)
1/4 cup butter, divided
1/2 cup diced onion
1 1/2 cups shredded cheddar cheese
1 cup sour cream
1/4 teaspoon salt
2 garlic cloves
3 teaspoons horseradish
Break cauliflower into sections. Cook for 10 minutes in boiling, salted water. Drain well. Combine cauliflower with 2 tablespoons butter and onion, cheese, sour cream and salt. Spoon into a 1 1/2 quart casserole.
Melt remaining butter and add garlic and horseradish. Pour over the cauliflower mixture. Bake, uncovered at 350 degrees for 30 minutes or until heated through.