Instructions: In a mixing bowl, cream butter and sugar. Add egg yolks; mix well. Combine flour, baking powder and salt; add alternately with lemon juice to creamed mixture. Beat egg whites until stiff peaks form; fold into batter with lemon peel. Fill greased or paper-lined muffin cups two-thirds full.

Sprinkle with cinnamon sugar. Bake at 350 for 20-25 minutes or until light golden brown and a toothpick inserted in the center comes out clean.

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