Prepare 16x12x1-inch sheet pan (half sheet) by lightly greasing or spraying with non-stick cooking spray.
Cut open one end of pouch and squeeze batter into prepared pan.
Spread batter with spatula until even.
For convection oven, bake at 325°F 27-32 minutes; for standard oven, bake at 375°F 36-41 minutes.
Allow brownies to cool 5-10 minutes, then randomly sprinkle inclusions over semi-warm brownies so the ingredients slightly melt into the top of the brownies.