Rhubarb muffins with cinnamon sugar topping offer a delightful balance of tart and sweet flavors, perfect for breakfast or brunch. They are easy to make, freeze, and reheat, providing a refreshing springtime treat with a nostalgic and gourmet touch.
2 cups all-purpose flour
¾ cup granulated sugar
2 teaspoons baking powder
½ teaspoon baking soda
½ teaspoon salt
1 egg
1 cup buttermilk
½ cup vegetable oil
1 teaspoon vanilla extract
1½ cups fresh rhubarb, diced
¼ cup granulated sugar (for topping)
1 teaspoon ground cinnamon (for topping)