Apple Cinnamon Crumb Muffins - Recipe Tweets

Ingredients

• 1/3 cup light or dark brown sugar
• 1 tablespoon granulated sugar
• 1 teaspoon ground cinnamon
• 1/4 cup unsalted butter, melted
• 2/3 cup all-purpose flour
• 1 teaspoon baking soda
• 1 teaspoon baking powder
• 1/2 teaspoon salt
• 1/2 cup unsalted butter
• 2 large eggs, at room temperature
• 1/2 cup plain yogurt or sour cream
• 2 teaspoons pure vanilla extract
• 1/4 cup milk
• 1 1/2 cups peeled and chopped apples
• 1 cup confectioners' sugar
• 3 tablespoons heavy cream or milk