Preheat the oven to 375 F (190 C). Line a 12 ct. muffin pan with cupcake liners.
In a microwave safe cup, heat water to warm and mix in the molasses until smooth and well combined.
½ cup (118 ml) molasses, ¼ cup (59 ml) very warm water
In a mixing bowl whisk the all purpose flour, baking soda, ground cinnamon, ground ginger, ground cloves, ground nutmeg and salt together until well combined.
2 cups (240 g) all purpose flour, 1 teaspoon baking soda, 2½ teaspoons ground ginger, 1½ teaspoons ground cinnamon , 1 teaspoon ground cloves, ½ teaspoon ground nutmeg, ¼ teaspoon salt
In a large mixing bowl, whisk the melted butter and light brown sugar together until well combined. Whisk in the warm molasses, followed by the egg and sour cream until smooth and well combined. Mix the dry ingredients into wet, alternating with the milk until just combined. ½ cup (113 g) unsalted butter, melted, ¾ cup (150 g) light brown sugar, 1 large egg, room temperature, ¼ cup (60 g) sour cream, room temperature, ¼ cup (59 ml) milk, room temperature
Use a 3 tablespoon sized cookie scoop to scoop the muffin batter into each of the muffin liners. For the tall bakery style tops, alternate muffin cups. Top with coarse sugar if you like. 2 - 3 tablespoons (25 - 38 g) coarse sugar for topping, optional
Bake the ginger muffins for 17 -20 minutes or until a toothpick inserted into the center of the muffins comes out clean or with a few moist crumbs and the tops bounce back quickly when lightly pressed.
Cool the muffin pan in the pan for 5 - 10 minutes. Gently lift the molasses spiced muffins out of the pan and transfer to a cooling rack to cool to room temperature and enjoy!