Chocolate-Pistachio Crumb Cake | Saveur

Ingredients

• 1 3⁄4 cups all-purpose flour (218 g)
• 1 cup firmly packed organic light-brown sugar (200 g)
• 1⁄4 cup natural cane sugar (48 g)
• 1⁄4 cup unsweetened cocoa powder (25 g)
• 2 tsp. ground cinnamon
• 1 1⁄4 tsp. kosher salt
• 1 cup plus 2 Tbsp. (2¼ sticks) unsalted butter, cut into medium-size cubes, then left out to soften
• 1⁄2 cup bittersweet chocolate chips (65 g)
• 1⁄4 cup coarsely chopped raw unsalted pistachios (35 g)
• 2 1⁄4 cups all-purpose flour
• 1⁄2 tsp. baking powder
• 1⁄2 tsp. baking soda
• 3⁄4 tsp. kosher salt
• 3⁄4 cup plus 2 Tbsp. (1¾ sticks) unsalted butter, softened, plus more for greasing
• 1 1⁄2 cups natural cane sugar
• 3 large eggs
• 2 tsp. pure vanilla extract
• 1 cup full-fat sour cream
• 5 tbsp. unsweetened cocoa powder
• 1⁄4 tsp. espresso powder