Ingredients
Equipment
Method
Preheat and prep the pan
- Preheat the oven to 350F and grease a 9x13 pan so the cake releases cleanly.
Make the cinnamon streusel
- Cut the cold butter into the flour, brown sugar, and cinnamon until crumbly, with no large butter chunks left visible.
Make the apple coffee cake batter
- Beat the butter and sugar until smooth, then beat in the eggs and vanilla until fully combined.
- Mix in the sour cream until the batter looks thick and creamy.
- Fold in the dry ingredients and then fold in the diced apple just until no dry streaks remain.
Assemble and bake
- Spread the batter into the prepared pan, then scatter the streusel evenly over the top.
- Bake at 350F for 45-50 minutes, until the center is set and a toothpick comes out with a few moist crumbs.
Reduce cider and glaze
- Reduce the apple cider until concentrated, then cool it slightly before whisking.
- Whisk the reduced cider into the powdered sugar and cinnamon until smooth and thick, then drizzle over the warm cake in thick ribbons.
Notes
Pro tip: use cold butter for the streusel so it stays sandy and bakes into crisp crumbles. Store covered in the fridge up to 4 days; rewarm individual slices briefly in the microwave. Freeze baked cake (without glaze) up to 2 months, then thaw and glaze after reheating. For a lighter option, substitute plain Greek yogurt for sour cream for a similar tang and moisture.
