Name: Sour cream coffee cake
Prep time: 10 min
Cook time: 60 min
Yield: 8
Cuisine: American
Ingredients: 110g unsalted butter at room temperature; 300g granulated sugar; 3 extra-large eggs at room temperature; 1 1/2 teaspoons pure vanilla extract; 300g sour cream; 310g plain flour; 2 teaspoons baking powder; 1/2 teaspoon baking soda; 1/2 teaspoon kosher salt; For the streusel; 55g light brown sugar, packed; 60g all-purpose flour; 1 1/2 teaspoons ground cinnamon; 1/4 teaspoon kosher salt; 3 tablespoons cold unsalted butter, cut into pieces; 110g chopped walnuts, optional; For the glaze; 100g cup icing sugar; 2 tablespoons real maple syrup