"A Classic Sour Cream Coffee Cake has a cinnamon sugar streusel layered inside and on top of this breakfast cake. It's a recipe you will make over and over...."
INGREDIENTS
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2/3 cup flour
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1 cup packed brown sugar
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2 teaspoons cinnamon
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4 Tablespoons butter, melted
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1 cup unsalted butter, softened
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2 cups sugar
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2 eggs
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1/2 teaspoon vanilla
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1 cup sour cream
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2 cups flour
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1 teaspoon baking powder
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1/2 teaspoon salt
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1 1/2 cups powdered sugar
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5-6 teaspoons milk