INGREDIENTS
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For the streusel
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3/4 cup (150 grams) light brown sugar
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1/3 cup (48 grams) all-purpose flour
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1 teaspoon ground cinnamon
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4 tablespoons (57 grams) unsalted butter, melted
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For the coffee cake
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1 1/2 sticks (170 grams) unsalted butter
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2 cups (254 grams) all-purpose flour
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1 teaspoon baking powder
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1/2 teaspoon baking soda
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1/2 teaspoon fine salt
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1/4 cup (50 grams) granulated sugar
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1/2 cup (100 grams) light brown sugar
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1/4 cup whole milk
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2 large eggs, at room temperature
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8 ounces (227 grams) sour cream, at room temperature
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For the topping
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1/2 cup (63 grams) powdered sugar, sifted
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1 tablespoon milk