Preheat the oven to 425°F and line a large baking sheet with parchment paper.
Add the brussel sprouts to a large, microwave-safe bowl and add an inch of water to the bottom of the bowl. Cover with plastic wrap, poke a couple holes into the plastic and microwave on high until knife tender, 5-6 minutes. Carefully remove plastic. Strain and pat dry really well.
Transfer the brussel sprouts to the prepared parchment paper. Use the bottom of a cup or a meat mallet to smash the sprouts until flattened. Pat dry with paper towels to remove any excess moisture.
Combine the olive oil, garlic powder, paprika, oregano, salt, and pepper in a small bowl.
Brush the oil mixture evenly over the sprouts and spread the brussel sprouts so they are not touching. Bake for 10 minutes. Sprinkle the parmesan cheese on top and continue baking for 10 more minutes or until the cheese is golden and crispy.
Notes
The nutrition label does not include the ranch dip.Storage: Kept in an airtight container in the fridge, the brussel sprouts will keep for up to 3 days. To reheat them, you can do so on a baking sheet in a 425°F oven until crispy. You could also use the air fryer!