INGREDIENTS
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1 cup (2 sticks) unsalted butter, softened, more for greasing pan
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2 cups all-purpose flour, more for dusting pan
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5 oz unsweetened baking chocolate
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1/4 cup instant espresso
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2 tbsp unsweetened dark cocoa powder
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1 cup Maker’s Mark bourbon
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1/2 tsp salt
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2 cups granulated sugar
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3 large eggs
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1 tbsp vanilla extract
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1 tsp baking soda
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powdered sugar