Loaded Cookie Bars are stuffed with Oreo cookies, M&M's, and Reese's candy but you can toss in whatever you want! They're thick, chewy, and scrumptious. Perfect for leftover Halloween candy! No mixer required.
Preheat the oven to 350°F. Line a 9 by 13-inch metal baking pan** with parchment paper and spray with nonstick cooking spray.
In a large bowl, vigorously stir the melted butter, granulated sugar, and brown sugar until very well combined. Add in the vanilla, eggs, and egg yolk and stir until well combined. Gradually add in the flours, baking soda, and salt and stir until just combined. Fold in the Oreos, M&M’s, and Reese’s, reserving some to sprinkle on top.
Use a spatula to press the dough evenly into the prepared pan. Sprinkle with the reserved candy, pressing each down lightly. Bake for about 25 minutes, or until golden brown but not overcooked. Cool completely before cutting into squares and serving.
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Notes
* If you don't have bread flour, use a total of 2 1/4 cups (286 grams) of all-purpose flour. Just know your bars won't be quite as chewy.** I do not recommend using a glass or ceramic pan to bake these cookie bars. If that's all you have, you'll need to reduce the bake temp by 25°F and increase the baking time anywhere from 5-15 minutes. Learn more about Glass vs. Metal Baking Pans here.
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