Step 1: Preheat your oven to 350°F (175°C). In a bowl, whisk together corn syrup, brown sugar, eggs, vanilla, and melted butter until smooth. Stir in 2 cups of pecan halves.
Step 2: In a separate bowl, combine flour, sugar, baking powder, and salt. Slowly whisk in milk and melted butter to form a smooth batter.
Step 3: Grease a 9x13-inch baking dish or casserole. Pour the cobbler batter evenly into the dish. Carefully spoon the pecan pie filling over the batter without mixing.
Step 4: Sprinkle the extra pecan halves and sugar on top for added texture and sweetness.
Step 5: Bake for 45–50 minutes or until the cobbler is golden brown and the filling bubbles along the edges. Cool slightly, then serve warm with vanilla ice cream if desired.