Brown Sugar Hojicha Banana Bread

Name: Brown Sugar Hojicha Banana Bread
Ingredients: 8 tablespoons (1 stick/ 4 ounces/115g) unsalted butter, at room temperature; 1⁄2 cup (100g) granulated sugar; 1⁄2 cup (100g) packed dark brown sugar; 1 1⁄2 cups (about 400g) mashed bananas (about 4 very ripe bananas); 1⁄2 cup (about 120g) whole-milk Greek yogurt or mascarpone; 2 large eggs, at room temperature; 2 teaspoons vanilla extract; 1 tablespoon hojicha tea powder; 1 teaspoon (5g) baking powder; 1 teaspoon (6g) baking soda; 1⁄2 teaspoon (1.5g) Diamond Crystal kosher salt; 1 1⁄2 cups (180g) all-purpose flour; 1 cup powdered sugar, sifted; 2 tablespoons whole milk, nondairy milk, or water; 1 teaspoon hojicha tea powder