Good-Cooking - Orange Poppy Seed Muffins

Ingredients

• 1 1/3 cups flour
• 1 cup granulated sugar
• 2 tablespoons grated orange rind
• 1 tablespoon poppy seeds
• 1/2 teaspoon salt
• 1/2 teaspoon baking soda
• 1/2 cup sour cream
• 1/3 cup butter, melted
• 1 egg, slightly beaten
• 2 tablespoons frozen orange juice concentrate