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Preheat oven to 350 degrees.
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Grease 9x9x2 inch baking pan.
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Stir together 2 Cups flour, baking powder, and salt. Set aside.
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In a medium bowl, combine 3/4 Cup sugar and 1/4 Cup butter. Beat with an electric mixer on medium speed until combined.
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Add egg, beat until fluffy.
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Alternately add flour mixture and milk to egg mixture, beating on low speed after each addition just until combined.
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Gently fold in berries.
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Spread batter in prepared pan.
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For topping, in a small bowl, combine 1/2 Cup sugar, 1/3 Cup flour, and cinnamon.
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Cut in 1/4 Cup butter until mixture resembles coarse crumbs.
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Sprinkle topping over batter, sprinkle with additional sugar.
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Bake for 40 to 45 minutes or until topping is golden and toothpick inserted in center comes out clean.
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Serve warm, with whipped cream, if desired.