"These Peanut Butter Oatmeal Sandwich Cookies with Marshmallow Creme Filling have a soft, chewy texture and gooey creme filling with peanut butter twist!..."
INGREDIENTS
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1 stick (½ cup) unsalted butter (softened)
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¾ cup firmly packed light brown sugar
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¼ cup granulated sugar
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1 tablespoon vanilla extract
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½ cup creamy peanut butter
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1 large egg
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¾ cup quick oats
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1 cup all-purpose flour
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½ teaspoon baking powder
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½ teaspoon baking soda
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½ teaspoon cinnamon
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½ teaspoon salt
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7 oz. jar Marshmallow Fluff
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½ cup (1 stick) unsalted butter (softened)
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⅓ cup powdered sugar
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1 tablespoons vanilla extract
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⅛ teaspoon salt