Cinnamon Streusel Pumpkin Coffee Cake

Ingredients

• 1/2 cup flour
• 1/2 cup packed brown sugar
• 3/4 teaspoon ground cinnamon
• 1/8 teaspoon ground nutmeg
• 1/8 teaspoon ground cloves
• 1/8 teaspoon ground ginger
• 4 tablespoons (1/2 stick) butter, melted
• 1/4 cup chopped pecans
• 1/2 cup sugar
• 6 tablespoons (3/4 stick) butter, at room temperature
• 3/4 cup pumpkin purée
• 2 tablespoons milk
• 2 tablespoons sour cream
• 1 egg
• 1 teaspoon vanilla extract
• 1 cup flour
• 1 1/4 teaspoons baking powder
• 1 1/2 teaspoons ground cinnamon
• 3/4 teaspoon ground nutmeg
• 1/4 teaspoon ground cloves
• 1/2 teaspoon ground ginger
• 3/4 cup powdered sugar
• 1/2 teaspoon maple extract
• 1 tablespoon milk, or more as needed
• Chopped pecans, for garnish