Good-Cooking - Raspberry Bran Muffins

Ingredients

• 1 1/4 cups flour
• 3/4 cup granulated sugar
• 1 teaspoon baking powder
• 1/4 teaspoon baking soda
• 1/4 teaspoon salt
• 1 cup buttermilk
• 1/4 cup vegetable oil
• 1 egg
• 4 cups bran flakes cereal
• 1/4 cup raspberry jam