Leftover Halloween Candy Blondies

Preheat the oven to 350 ºF. Line an 8-inch square baking pan with parchment paper, allowing it to hang over the sides. Coat the paper with cooking spray. In a stand mixer fitted with the whisk attachment, whisk together the melted butter with the sugar and light brown sugar until smooth, about 2 minutes. Add the eggs and vanilla and whisk until combined. Remove the bowl from the stand mixer and stir in the flour and salt just until incorporated. Stir in 1/2 cup of the assorted Halloween candy. Pour the batter into the prepared pan, smoothing the top, then sprinkle the remaining 1/2 cup of Halloween candy over the top of the batter. Bake for 30 to 35 minutes until a toothpick inserted comes out clean. Let the pan cool completely then remove the blondies using the parchment paper overhang, cut into 16 squares and serve.