Sweet Onion Muffins Recipe Cuisine: American Author: Editor Prep time: 15 mins Cook time: 15 mins Total time: 30 mins Serves: 3 Ingredients 1/2 cups all purpose flour 1/2 cup sugar 11/2 tsp baking powder 1/2 tsp salt 2 eggs 1 cup finely chopped onion 1/2 cup butter or margarine 1 1/2 cups chopped walnuts