INGREDIENTS
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1 stick unsalted butter (softened to room temperature )
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3/4 cup granulated sugar
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1 large egg (at room temperature)
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1 teaspoon vanilla extract
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1 1/2 cups all-purpose flour (leveled off exact)
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1/4 teaspoon salt
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1 teaspoon baking powder
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1/2 teaspoon baking soda
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1 teaspoon cream of tarter
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1/2 cup rainbow sprinkles
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1/2 cup marshmallows
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1/2 cup white chocolate chips