Ingredients
Scale
For the Muffins:
- 2 cups all-purpose flour
- 3/4 cup granulated sugar
- 2 teaspoons baking powder
- 1/2 teaspoon salt
- 1 large egg, room temperature
- 3/4 cup whole milk
- 1/2 cup unsalted butter, melted and cooled
- 1 teaspoon pure vanilla extract
- 1 cup semi-sweet chocolate chips
For the Cinnamon Streusel:
- 1/3 cup light brown sugar, packed
- 1/4 cup all-purpose flour
- 1 teaspoon ground cinnamon
- 2 tablespoons cold unsalted butter, cubed
Instructions
- Preheat your oven to 375°F (190°C) and line a standard 12-cup muffin tin with paper liners or grease it well with cooking spray. In a small mixing bowl, combine the brown sugar, 1/4 cup flour, and cinnamon. Use a fork or a pastry cutter to work the cold, cubed butter into the dry mixture until it resembles coarse sand with small pea-sized clumps. Set this aside in the refrigerator to keep the butter cold.
- In a large mixing bowl, whisk together the 2 cups of flour, granulated sugar, baking powder, and salt until well combined. In a separate medium bowl, beat the egg lightly. Whisk in the milk, melted butter, and vanilla extract. Ensure the melted butter has cooled slightly so it does not scramble the egg.
- Make a well in the center of the dry ingredients. Pour the wet mixture into the well. Use a spatula to fold the ingredients together gently. Stop mixing as soon as no large streaks of flour remain; the batter should be slightly lumpy. Carefully fold in the chocolate chips. Overmixing at this stage will result in tough, dense muffins.
- Divide the batter evenly among the 12 muffin cups, filling each about three-quarters full. Retrieve the streusel from the fridge and sprinkle a generous tablespoon over the top of each muffin. Press the crumbs down very lightly so they adhere to the batter during the rise.
- Place the tin on the center rack of the oven and bake for 18 to 22 minutes. Test for doneness by inserting a toothpick into the center of a muffin; it should come out clean or with a few moist crumbs. Let the muffins cool in the tin for 5 minutes before transferring them to a wire rack to cool completely. Serve them warm for the best chocolate-melting experience.
- Cook Time: 35 minutes