Pumpkin Sour Cream Coffee Cake

Ingredients

• ¾ cup butter, room temperature
• 1 cup sugar
• 3 large eggs, room temperature
• 1 cup sour cream
• 1 cup pumpkin puree
• 1 teaspoon vanilla extract
• 2½ cups all-purpose flour
• 2 teaspoons cinnamon
• 2 teaspoons allspice
• 1½ teaspoon nutmeg
• 1½ teaspoon baking powder
• 1 teaspoon baking soda
• ½ teaspoon salt
• 1 cup all-purpose flour
• 1 cup brown sugar
• ¾ cup butter, melted