To prepare a three bran refrigerator muffins adapted baked goods recipe, you will first need to prepare the muffin tin. Preheat the oven to 350 degrees F (180 degrees C) and grease the insides of the cupcake liners with cooking spray. Mix together the flour, baking powder, sugar, and salt. Add the dry ingredients to the wet ingredients and stir to combine. Pour the batter into the prepared muffin cups and bake for 18 to 20 minutes or until the tops are golden brown.