Creating your Snickerdoodle Blondies is a breeze if you follow these simple steps:

1. Preheat the Oven: Preheat your oven to 350°F (175°C). Grease a 9×13-inch baking pan or line it with parchment paper for easy removal.
2. Mix Wet Ingredients: In a large bowl, combine the melted butter, brown sugar, and granulated sugar. Mix until well combined.
3. Add Eggs and Vanilla: Whisk in the eggs one at a time, followed by the vanilla extract, until the mixture is smooth and creamy.
4. Combine Dry Ingredients: In another bowl, whisk together the flour, baking powder, baking soda, salt, and 1 teaspoon of cinnamon.
5. Combine Mixtures: Gradually add the dry ingredients to the wet mixture, stirring until just combined. Be careful not to overmix.
6. Spread the Batter: Pour the blondie batter into the prepared baking pan, spreading it evenly.
7. Prepare Cinnamon Sugar: In a small bowl, mix the remaining 1/4 cup of granulated sugar with 1 teaspoon of cinnamon.
8. Sprinkle Topping: Evenly sprinkle the cinnamon sugar mixture over the top of the blondie batter.
9. Bake: Place the pan in the preheated oven and bake for 25-30 minutes, or until the edges are golden brown and a toothpick inserted in the center comes out clean.
10. Cool: Remove from the oven and let the blondies cool in the pan for about 10-15 minutes before slicing.

These straightforward steps will guide you in crafting Snickerdoodle Blondies that are sure to impress!