INGREDIENTS
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1 c. cake flour
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1 ¾ tsp. baking powder
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1/4 tsp. salt
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6 T. butter, at room temperature, divided
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1/2 c. granulated sugar
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1 tsp. vanilla extract
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1 egg
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1/2 c. buttermilk or sour milk (I used 1/2 T. pineapple juice and then filled the cup the rest of the way with milk)
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1 (20 oz.) can pineapple slices
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1/2 c. brown sugar