Ingredients
Equipment
Method
Brown butter and prep
- Brown the butter in a saucepan until golden and nutty, then cool for exactly 10 minutes so it doesn’t scramble the eggs.
- Preheat the oven to 350F and grease a 9x13 pan so the blondies release easily.
Mix dry ingredients
- Whisk the all-purpose flour, baking powder, cinnamon, cream of tartar, nutmeg, and salt until evenly combined and no streaks remain.
Mix wet ingredients
- Whisk the browned butter and packed brown sugar until smooth, then add the eggs and vanilla extract and whisk until fully blended.
Assemble and bake
- Fold the dry flour mixture into the wet mixture until just combined, avoiding overmixing.
- Fold in the diced apples so they’re evenly distributed throughout the thick batter.
- Spread the batter into the prepared 9x13 pan and level the top.
- Mix the sugar and cinnamon for the cinnamon sugar top, then sprinkle generously over the surface so it forms a fragrant crust.
- Bake at 350F for 25 to 30 minutes until a toothpick comes out with just a few crumbs, with the edges set and the center slightly soft.
Finish
- Drizzle with caramel and cool completely before slicing so the bars hold their shape.
Notes
For clean squares, let the blondies cool fully to room temperature before cutting; warm bars can crumble. Store airtight in the refrigerator up to 5 days, or freeze up to 2 months (wrap tightly). For a less sweet option, reduce the caramel drizzle amount or use a thinner layer while keeping the cinnamon-sugar top intact.
