INGREDIENTS
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Cooking spray, for the pan
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1 1/2 cups broken pretzel pieces
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1 1/4 cups all-purpose flour
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1 1/2 teaspoons baking powder
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1 teaspoon kosher salt
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1 stick unsalted butter
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1 1/2 cups packed light brown sugar
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2 large eggs, lightly beaten
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2 teaspoons vanilla extract
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8 marshmallows, halved crosswise
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1/4 cup peanut butter chips
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1 teaspoon vegetable oil
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1/4 cup semisweet chocolate chips