Ingredients
Equipment
Method
Brown butter and prep
- Brown the butter in a cast iron skillet until golden and nutty, then cool for 10 minutes.
- Preheat oven to 350F and grease a 9x13 pan.
Mix dry and wet
- Whisk the all-purpose flour, baking powder, cinnamon, cream of tartar, nutmeg, and salt until evenly combined.
- Whisk the browned butter and packed brown sugar until smooth, then add eggs and vanilla extract and whisk until smooth.
Combine and top
- Fold the flour mixture into the batter until just combined.
- Fold in the finely diced apples.
- Spread the batter into the prepared pan.
- Mix the sugar and cinnamon for the cinnamon sugar top, then sprinkle generously over the surface.
Bake and finish
- Bake at 350F for 25-30 minutes, until a toothpick comes out with just a few crumbs.
- Drizzle with caramel and cool completely before slicing.
Notes
Pro tip: For clean blondie squares, let the pan cool completely before slicing—caramel thickens as it sets. Store covered at room temperature up to 3 days or refrigerate up to 5 days; freeze sliced bars up to 2 months. For a lighter option, use unsweetened applesauce in place of half the butter (texture will be slightly less chewy).
