INGREDIENTS
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2 sticks butter
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¼ cup sugar
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1 egg
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2 cups all-purpose flour
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¼ tsp. salt
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1 egg yolk beaten with 1 tbl. water for an egg wash
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(helps the topping to stay on)
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Topping
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¼ cup sugar
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1 tsp. ground cinnamon
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½ cup finely chopped walnuts