Ingredients
Scale
- ¼ cup all-purpose flour (30g)
- 1 ½ tablespoons light brown sugar (packed)
- 2 teaspoons granulated sugar
- tiny pinch of salt
- 1 ½ tablespoons unsalted butter (melted)
- 10 tablespoons unsalted butter (soft/room temp)
- ¼ cup light brown sugar (packed, 50g)
- 1 large egg (room temperature)
- 1 ½ teaspoons vanilla extract
- 1 blueberry muffin boxed mix (a box between 16.9–17.1 ounces with REAL blueberries)
- ¼ cup all-purpose flour (30g)
Instructions
- Streusel
- Blueberry Muffin Cookies