INGREDIENTS
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1/2 cup all-purpose flour
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1 1/2 cups yellow cake mix
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1/2 cup granulated sugar
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1/2 cup (1 stick) unsalted butter, room temperature
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2 teaspoons vanilla extract
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1/3 cup rainbow sprinkles
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3 cups (16 oz) white chocolate melting wafers or candy melts
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Rainbow nonpareils (small round sprinkles)