Preheat the oven to 350°F. Spray a metal aluminum 8x8 pan with baking spray or line with parchment paper. Set aside.
Melt the butter in a microwave safe bowl. Let the butter cool slightly. Then whisk in the sugars until combined. Whisk in eggs one at a time and then whisk in vegetable oil and vanilla extract.
1/2 cup unsalted butter, melted and slightly cooled, 2/3 cup white sugar, 1/2 cup brown sugar, 3 large eggs, room temperature, 2 Tbsp. vegetable oil, 1 Tbsp. vanilla
Add the flour and salt and stir until combined.
1/2 cup flour, 1/2 tsp. salt
Remove ¾ cup of the batter and place in another mixing bowl. Add the pumpkin puree to it along with the pumpkin pie spice and cinnamon. Stir to combine.
1/2 cup 100% pumpkin puree, 1/2 tsp. pumpkin pie spice, 1/4 tsp. ground cinnamon
To the original batter the cocoa powder and mini chocolate chips to make the brownie batter.
1/2 cup unsweetened cocoa powder, 1/2 cup mini chocolate chips
Spread all but 3 tbsp. of the brownie batter into the prepared pan. Spread the pumpkin batter on top. Dollop the reserved brownie batter on top. Then, using a butter knife, twirl the brownie batter into the pumpkin. Bake for 23-25 min or until set.
Garnish with flaky sea salt. Let cool for 5-10 minutes then slice and enjoy!
sea salt flakes for garnish