INGREDIENTS
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1 cup all-purpose flour
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1/2 teaspoon baking powder
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1/2 teaspoon baking soda
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1/2 teaspoon salt
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1 cup graham cracker crumbs
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1/2 cup butter, softened
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1/2 cup granulated sugar
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1/2 cup firmly packed light brown sugar
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1 large egg
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1 teaspoon vanilla extract
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1 (8-oz.) container sour cream
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Parchment paper
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Marshmallow Filling
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1 (12-oz.) package semisweet chocolate morsels
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2 teaspoons shortening
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Toppings: chopped roasted salted pecans, chopped crystallized ginger, sea salt