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Preheat the oven to 350. Insert liners into a medium cupcake pan.
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Combine the butter and graham crackers in a small bowl. Evenly sprinkle 1 heaping teaspoons of the mixture on the bottom of the cupcake liners.
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In a large bowl combine the cream cheese, sugar, flour, vanilla and almond extract with an electric mixer on medium speed until smooth.
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In a separate bowl combine the egg whites and cream of tartar. With clean beaters, mix on high speed until stiff peaks form.
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Carefully fold the egg white mixture into the cream cheese mixture.
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Carefully spoon the batter into the cupcake liners until three-quarters full. Bake for 20-25 minutes or until the edges of the cupcakes are puffed but the centers look moist. Cover and chill in the fridge.