INGREDIENTS
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3 (10.25 ounce) packages white cake mix
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9 egg whites
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1 cup vegetable oil
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3 3/4 cups whole milk
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2 tablespoons clear vanilla extract
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2 tablespoons red food coloring
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1 tablespoon blue food coloring
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1 cup white chocolate chips
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10 cups fluffy white frosting
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1 tablespoon white chocolate chips, or as needed
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2 tablespoons white sugar, or as needed
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1 4-inch round paper or cardboard stencil