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Spray your baking pan with non-stick cooking spray.
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In a small saucepan, add the beer and butter, and simmer until the butter is melted.
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Remove from heat, and mix in the sugar, and cocoa powder. Add in the eggs, sour cream, and vanilla extract. Fold in the flour, baking soda, mix until smooth.
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Pour your batter into the prepared pan.
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Set the baking pan to a 320 degrees F, air fryer setting, and bake for 15 to 20 minutes.
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Bake until a toothpick comes out clean, when placed into the middle of the cake.
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While the cake is cooling. Make your frosting, add the cream cheese, and powdered sugar, and cream, and mix.
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Spoon over the cake and frost.
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Plate, serve and enjoy!
