Ingredients
Method
- Mix the streusel and cinnamon filling: whisk filling ingredients; cut cold butter into flour mixture for streusel until clumps form, about 2 minutes.
- Cream the softened butter and granulated sugar until light and fluffy, about 2 minutes.
- Beat in eggs, vanilla, discard, and milk, then fold in the dry ingredients just until combined.
- Spread half the batter in a greased 9x9-inch pan, sprinkle filling, top with remaining batter, and scatter streusel.
- Bake at 350°F (175°C) for 35 to 40 minutes, until a toothpick comes out clean.
- Cool in the pan for 10 minutes, lift out, slice, and serve.
Notes
This cake works best with 100% hydration sourdough discard (equal parts flour and water). If your discard is thinner, reduce the milk by 1 tablespoon. For the best flavor, let the discard come to room temperature before using.
