Good-Cooking - Raspberry Corn Muffins

Ingredients

• 1 cup yellow cornmeal
• 1 cup all-purpose flour
• 1/2 cup granulated sugar
• 1 teaspoon baking powder
• 1 teaspoon baking soda
• 1/4 teaspoon salt
• 2 eggs
• 1 1/4 cups plain yogurt
• 1/4 cup butter
• 1 cup raspberries