Chocolate Chip Sour Cream Coffee Cake

Name: Chocolate Chip Sour Cream Coffee Cake
Prep time: 25 min
Cook time: 1 h
Total time: 1 h 25 min
Cuisine: American
Ingredients: 1 1/2 cups all-purpose or whole wheat pastry flour; 2 teaspoons baking powder; 1 teaspoon cinnamon; 1 teaspoon salt; 1-3 tablespoons instant espresso/coffee; 1 cup sour cream or Greek yogurt; 1/2 cup maple syrup; 1/2 cup melted coconut oil or extra virgin olive oil; 3 eggs; 1 tablespoon vanilla extract; 1/2 cup chopped dark chocolate, plus more for topping; 1/2 cup brown sugar; 2 tablespoons flour; 2 tablespoons melted butter; 1 cup powdered sugar; 2 teaspoons vanilla extract; 1-4 tablespoons water or brewed espresso/coffee