Pumpkin Sour Cream Coffee Cake

Ingredients

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