Classic Cauliflower au Gratin

Details

Ingredients

• 1 large head cauliflower, cut into bite-size pieces
• 1 cup light sour cream
• 1 cup shredded Cheddar cheese
• ½ cup diced onion
• 3 tablespoons melted butter
• 2 tablespoons red pepper flakes, or to taste
• ¼ teaspoon salt
• ½ cup panko bread crumbs