In a large bowl, combine the broccoli, rosemary, garlic powder, pepper flakes and avocado oil. Season with salt and pepper, to taste.
Unfold the puff pastry and set it down flat on top of a lightly greased baking sheet. Evenly spoon the broccoli mixture on top of the puff pastry, leaving 1/2 inch of the edges untouched. Sprinkle the Gouda and mozzarella cheese evenly over all.
Bake in a preheated oven for 18 to 23 minutes, or until the pastry is golden brown. Cut into squares with a pizza cutter.