INGREDIENTS
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1/2cup(1 stick) unsalted butter, at room temperature, plus more for the baking dish
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1/2cupraspberry jam
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1/2cupfresh raspberries, mashed
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1 3/4cupsall-purpose flour, spooned and leveled
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1/2teaspoonfine salt
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1/2teaspoonbaking powder
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3/4cupsugar
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1large egg
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1teaspoonpure vanilla extract
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1cupcreamy peanut butter
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1/2cupchopped salted roasted peanuts