Preheat oven to 425°F (218°C). Generously grease a 12-count muffin pan with butter or nonstick spray or line with muffin liners. Set aside.

Cut the butter into smaller pieces so it melts easier. In a large microwave-safe bowl, heat the butter and molasses together in the microwave on high for about 1 minute. Whisk until thoroughly mixed together. Set aside to slightly cool as you mix the dry ingredients together.

Whisk the flour, baking soda, salt, cinnamon, ginger, and cloves together.

Into the molasses/butter mixture, whisk the brown sugar, egg, yogurt, and milk until all wet ingredients are combined. Pour wet ingredients into dry ingredients and whisk until *just* combined. Do not over-mix. Batter will be thick and a little lumpy.

Divide batter among prepared muffin pan, filling all the way to the top. Sprinkle with coarse sugar (for added crunch, recommended!), if desired. Bake at 425°F for 5 minutes, then, keeping the muffins in the oven, reduce the oven temperature to 350°F (177°C) and continue to bake for 15-16 minutes until the tops are cracked and centers are set. Use a toothpick to test. Allow to cool for 5-10 minutes in pan before glazing and serving.

As the muffins cool, prepare your lemon glaze by mixing all of the ingredients together in a medium bowl. If desired, add more confectioners’ sugar to thicken or more milk to thin out. Drizzle on top of warm muffins. Icing will set as the muffins cool, so these are great for storing and/or transporting.

Cover leftover (iced or plain) muffins and store at room temperature for 2 days or in the refrigerator for 1 week. Muffins (iced or plain) freeze well for up to 3 months. Thaw in the refrigerator or on the counter.