"Moist, tender Coffee Cake with a ribbon of chocolate in the middle and a streusel topping. Serve for breakfast, brunch, or dessert!..."
INGREDIENTS
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3/4 cup all-purpose flour
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2/3 cup brown sugar
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1 teaspoon cinnamon
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pinch of salt
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1 cup finely chopped hazelnuts
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5 tablespoons cold, unsalted butter (, cut into cubes)
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2 cups all-purpose flour (, spooned and leveled)
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1 teaspoon baking powder
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1/2 teaspoon baking soda
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1/2 teaspoon salt
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1/2 cup unsalted butter (, softened)
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1 cup granulated sugar
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2 large eggs
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2 teaspoons vanilla
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1 cup sour cream
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2/3 cup Chocolate spread or Nutella ((not chocolate syrup))
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Powdered sugar (, for dusting)