INGREDIENTS
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1 1/2 cups cake flour
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1 1/2 tsp baking powder
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1/4 tsp salt
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1/2 cup (1 stick) unsalted butter, room temp
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1/2 cup granulated sugar
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1 large egg
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1 small lemon (1 tbsp juice + zest)
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1/4 tsp vanilla
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Frosting Ingredients
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1/4 cup (1/2 stick) unsalted butter, room temp
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1 1/2 cups powdered sugar
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1 small lemon (1 tbsp juice + zest)
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1/4 tsp vanilla
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a few drops of yellow food coloring