Step 1: Prepare the Brownie Base

1. Preheat your oven to 350°F (175°C). Grease a 9×13 inch baking pan or line it with parchment paper for easy removal.
2. In a medium saucepan, melt the butter over low heat. Remove from heat and stir in the granulated sugar until well combined.
3. Let the mixture cool slightly, then add the eggs one at a time, mixing well after each addition. Stir in the vanilla extract.
4. In a separate bowl, whisk together the flour, cocoa powder, baking powder, and salt. Gradually add the dry ingredients to the wet ingredients, mixing until just combined.
5. Pour the brownie batter into the prepared baking pan and spread evenly. Bake for 25–30 minutes, or until a toothpick inserted in the center comes out with a few moist crumbs. Allow to cool completely in the pan.

Step 2: Prepare the Pecan Pie Filling

1. In a large mixing bowl, combine the corn syrup, brown sugar, eggs, melted butter, and vanilla extract. Whisk until smooth.
2. Stir in the chopped pecans until evenly distributed.

Step 3: Assemble the Brownie Bombs

1. Once the brownies have cooled, cut them into squares. Using a small spoon or melon baller, scoop out a small amount from the center of each brownie square to create a well.
2. Spoon the pecan pie filling into each brownie square, filling them generously.

Step 4: Top with Chocolate

1. In a microwave-safe bowl, combine the semi-sweet chocolate chips and vegetable oil. Microwave in 30-second intervals, stirring in between, until melted and smooth.
2. Drizzle the melted chocolate over the filled brownie bombs or dip each one into the chocolate to coat completely. Allow the excess chocolate to drip off.

Step 5: Chill and Serve

1. Place the brownie bombs in the refrigerator for about 30 minutes to allow the chocolate to set.
2. Once set, serve the Pecan Pie Brownie Bombs and enjoy!