2Assemble Breville bench mixer with beater attachment. Place butter, sugar, brown sugar and vanilla in the mixing bowl. Mix on medium speed for 2 minutes until pale and creamy.
3Add egg and beat until just combined. Sift flour, baking powder and salt, then add to egg mixture on low speed, mixing until just combined.
4Add chocolate chips, pecans and oats and mix on low speed until just combined.
5Roll heaping tablespoons of dough into balls and place 6 balls, 2 inches apart, on each prepared pan.
6Insert wire racks in rack positions 3 and 6. Select COOKIES/315°F/SUPER CONVECTION/12 minutes. Press START to preheat oven.
7Bake cookies for 12 minutes, rotating halfway through baking (change top to bottom and front to back).
8Let cool on baking pans for 5 minutes then transfer to a wire rack to cool completely.
9Repeat steps 5 to 8 with remaining dough.
Tip: If using only one tray at a time bake on COOKIES/325˚F/CONVECTION/12 minutes in rack position 5 and rotate halfway through.