INGREDIENTS
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Ingredients
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FOR THE SWIRL
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1/4 cup (1/2 stick or 56.5 grams) unsalted butter (melted)
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1/3 cup (85 grams) brown sugar
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1 teaspoon cinnamon
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FOR THE CUPCAKES
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1 1/2 cups (190 grams) all-purpose flour
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1/2 cup (100 grams) sugar
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1 1/2 teaspoons baking powder
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1/2 teaspoon salt
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1/2 cup (1 stick or 113 grams) unsalted butter, at room temperature
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1/2 cup (113 grams) sour cream
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2 eggs, at room temperature
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1 teaspoon vanilla extract