01 -
First things first, preheat your oven to 350°F (175°C). Then, line a 9x13 inch baking pan with parchment paper, leaving an overhang on the sides. This is my absolute favorite trick for easy removal later. I can't tell you how many times I've forgotten this step and ended up with a crumbled mess trying to get them out. Don't be like me, learn from my oops moments!
02 -
In a medium microwave-safe bowl, melt your unsalted butter until it's just melted, not boiling. Or, if you're feeling fancy, do it on the stovetop. Pour the melted butter into a large mixing bowl. Add the light brown sugar and granulated sugar, then whisk them together until everything is smooth and glossy. It should look like a rich, golden syrup, and honestly, the smell is already incredible.
03 -
Now, whisk in those room temperature eggs, one at a time, until each is fully incorporated. Then, stir in the vanilla extract. Make sure everything is well combined; you want that smooth, unified base for your Apple Cinnamon Blondies. This step is where you build the foundation, so take your time, okay? You'll see the batter start to lighten a bit in color, which is a good sign!
04 -
In a separate bowl, whisk together your all-purpose flour, baking powder, and salt. Give it a good whisk to make sure everything is evenly distributed. This prevents pockets of baking powder in your final blondie, which, trust me, isn't a fun surprise. I've been there, thinking I could skip this and regretting it!
05 -
Gradually add the dry ingredients to the wet ingredients, mixing on low speed or by hand until *just* combined. Seriously, stop as soon as you don't see any dry streaks of flour. Overmixing develops gluten, and we want chewy blondies, not tough ones! Gently fold in your finely diced apples and any optional mix-ins like nuts or white chocolate chips.
06 -
Pour the batter into your prepared 9x13 inch pan and spread it evenly with a spatula. Pop it into your preheated oven and bake for 28-32 minutes. The edges should be set and lightly golden, and a toothpick inserted into the center should come out with moist crumbs, not wet batter. Remember, blondies are meant to be gooey, so don't overbake! The whole kitchen will smell like autumn, I promise.