1 (10 ounce) can coconut milk ½ cup crunchy peanut butter ½ small onion, grated 1 tablespoon dark soy sauce 2 teaspoons brown sugar ½ teaspoon red pepper flakes Combine coconut milk, peanut butter, onion, soy sauce, brown sugar, and pepper flakes in a saucepan over medium heat. Bring to a boil, stirring frequently. Remove from heat, and keep warm.