Pumpkin Spice Gooey Butter Cake - Ohio Eggs

Ingredients

• 3/4 cup firmly packed dark brown sugar
• 1/4 cup granulated sugar
• 1/2 cup unsalted butter, melted and divided
• plus 6 tbsp. unsalted butter, melted and divided
• 5 large eggs
• 1 1/2 cups all-purpose flour
• 2 tsp. baking powder
• 1/2 tsp. kosher salt
• 8 oz. cream cheese, softened
• 1 (15oz) can pumpkin puree
• 1 tbsp. vanilla extract
• 3 3/4 cups confectioners’ sugar, sifted
• 1/4 tsp. ground ginger
• 1/4 tsp. ground nutmeg
• 1/8 tsp. ground allspice
• 1/8 tsp. ground cloves
• Dusting confectioners’ sugar