Dark Chocolate and Pistachio Coffee Cake

Ingredients (12)

• 1/2 cup unsalted butter
• 1/2 cup roasted pistachios
• 3 ounces dark chocolate
• 3/4 teaspoon cinnamon
• 1 cup sugar, divided
• 2 cups all-purpose flour
• 3/4 teaspoon baking powder
• 1/2 teaspoon baking soda
• 1/2 teaspoon kosher salt
• 1 teaspoon vanilla extract
• 2 large eggs
• 1 cup Greek yogurt