INGREDIENTS
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Streusel:
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1 c. firmly packed brown sugar
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1/3 c. butter
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2 tsp. cinnamon
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1 c. chopped nuts
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Cake:
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1/2 c. butter or margarine
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3/4 c. sugar
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1 tsp. vanilla
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3 eggs
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1 tsp. pumpkin pie spice (optional)
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2 c. all-purpose flour
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1 tsp. baking powder
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1 tsp. baking soda
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1 c. sour cream
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Filling:
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1 3/4 c. pumpkin (solid pack)
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1 slightly beaten egg
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1/3 c. sugar
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1 tsp. pumpkin pie spice (add more here if omitted from batter)