Peanut butter & jelly cupcakes

Zutaten

• 1 1/3 cup all-purpose flour
• 1 cup sugar
• 1 teapoon vinegar
• 1/4 cup vegetable oil
• 1 cup water
• 3 tablespoons peanut butter
• 1 teaspoon vanilla extract
• 1 teaspoon baking soda
• 1/2 teaspoons sal
• 1/2 cup fruit jelly