Banana walnut muffins

Ingredients

• 2 large overripe bananas, mashed
• 1/2 tsp powdered cinnamon
• 1 tsp banana extract
• 1/2 cup white sugar
• 1 slightly beaten egg [if you want to make eggless; replace egg with 1/2 a more banana, simple! :) ]
• 1/3 cup melted margarine or butter
• 1/2 teaspoon baking soda
• 1 teaspoon baking powder
• 1/4 teaspoon salt
• 1 1/2 cups all purpose flour
• 1/2 cup chopped walnuts