Ingredients
Equipment
Method
Step-by-Step Instructions
- Preheat your oven to 350℉ (175℃) and line a muffin tin with bakery-style liners.
- In a medium bowl, combine brown sugar, flour, and ground cinnamon. Mix in melted butter until clumped together.
- In a large bowl, cream together softened butter and white sugar until fluffy, about 3-4 minutes. Add vanilla, eggs, milk, and sourdough starter; mix until combined.
- Gradually mix in baking powder and all-purpose flour until just combined. Be careful not to over-mix.
- Fill muffin liners halfway with batter, add a layer of cinnamon sugar filling, then top with more batter until three-quarters full. Press additional cinnamon sugar on top.
- Bake for 25–30 minutes until golden brown and a toothpick comes out clean.
- Mix together powdered sugar, vanilla, and milk for the glaze until smooth.
- Drizzle the glaze over the cooled muffins and serve warm or at room temperature.
Nutrition
Notes
Store leftovers in an airtight container for up to 5 days or freeze for up to 3 months. Allow to thaw at room temperature or microwave for a quick warm-up.