Step 1: Prepare Oven and Pan

• Preheat oven to 350°F (175°C).

• Grease a 9-inch pie dish or square baking pan for easy release.

Step 2: Make the Brownie Layer

• In a medium saucepan, melt the butter over low heat.

• Remove from heat and stir in granulated sugar, eggs, and vanilla extract until smooth.

• Add cocoa powder, flour, salt, and baking powder. Mix gently until fully combined with no lumps.

• Spread the brownie batter evenly into the prepared pan.

Step 3: Prepare Pecan Pie Topping

• In a bowl, whisk together light corn syrup, brown sugar, eggs, melted butter, and vanilla extract until smooth.

• Stir in the chopped pecans, ensuring even distribution.

Step 4: Assemble and Bake

• Carefully pour the pecan pie mixture over the brownie batter layer without disturbing the base.

• Bake in the preheated oven for 45–55 minutes, or until the top is set and a toothpick inserted in the center comes out with moist crumbs (not wet batter).

Step 5: Cool and Serve

• Allow the pie to cool completely in the pan to let layers set for clean slices.

• Slice into squares or wedges and serve.