01 -
Adjust oven rack to the second level position (just above center) and preheat oven to 350ºF. Generously spray an 8-inch square baking pan with a flour-based baking spray and set aside. Optionally, add a parchment paper sleeve to make slicing easier, ensuring both the pan and parchment paper are well-coated with spray.
02 -
In a medium bowl, whisk together the all-purpose flour, salt, baking powder, unsweetened cocoa powder, and espresso powder. Set aside.
03 -
Using a hand mixer or stand mixer fitted with a paddle attachment, blend unsalted butter, vegetable oil, granulated sugar, eggs, and vanilla extract on medium-high speed until incorporated.
04 -
Reduce mixer speed to low and gradually mix the dry ingredients into the wet mixture until just combined. The brownie batter will be thick but spreadable.
05 -
Spread the brownie batter into the prepared pan using a spatula. Bake for 25–30 minutes at 350ºF. Start checking at 25 minutes to ensure proper doneness.
06 -
In a medium saucepan over medium heat, continuously stir together granulated sugar, brown sugar, all-purpose flour, corn syrup, whisked egg, unsalted butter, and vanilla extract. Remove from heat and mix in the chopped pecans, or sprinkle nuts over the batter after pouring the topping.
07 -
Pour the pecan pie topping evenly over the baked brownies. Sprinkle with sea salt flakes and bake for an additional 15–20 minutes at 350ºF. The filling should have a slight jiggle when removed from the oven.
08 -
Allow the brownies to cool completely in the pan. Optionally, refrigerate for 30–60 minutes to set further. Serve chilled or at room temperature.
09 -
Store in an airtight container in the refrigerator for up to 3 days.