1-Preheat oven: Preheat oven to 375°F (190°C). Spray a standard muffin pan with non-stick cooking spray to keep everything from sticking.

2-Cream butter and sugar: Cream 1/2 cup softened butter and 2/3 cup granulated sugar together until light and fluffy, which helps build that soft texture we love.

3-Add wet ingredients: Add 1 large egg, 1 1/2 teaspoons vanilla extract, 1/2 cup milk, and 1/4 cup Greek yogurt or sour cream. Mix until combined for a smooth batter base.

4-Mix dry ingredients: In a separate bowl, stir together 1 2/3 cups all-purpose flour, 1 1/2 teaspoons baking powder, 1/4 teaspoon baking soda, 1/2 teaspoon ground cinnamon, and 1/2 teaspoon salt to blend the dry goods evenly.

5-Combine wet and dry: Add the dry ingredients to the wet ingredients and stir just until combined, remembering not to overmix so your muffins stay tender.

6-Divide batter: Divide the batter evenly among the muffin cups, filling each about two-thirds full for even baking.

7-Bake muffins: Bake for 15 to 20 minutes, or until a toothpick inserted into the center comes out clean or with a few moist crumbs. Briefly cool muffins in the pan before transferring them to a wire rack.

8-For the topping: Melt 3 tablespoons butter and mix 1/3 cup granulated sugar with 2 teaspoons ground cinnamon. Brush a thin layer of melted butter over the top of each warm muffin, then generously sprinkle with the cinnamon sugar mixture. You can also dip muffin tops in melted butter and then into the cinnamon sugar for extra flavor.