Directions
Preheat your oven to 400°F (200°C) and line a large baking sheet with foil for easy cleanup.
Toss the trimmed asparagus with olive oil, salt, and pepper, then spread it in a single layer on the prepared baking sheet.
In a small bowl, combine the softened butter, grated Parmesan, almond flour, garlic powder, and a pinch of salt and pepper.
Mix until it forms a smooth, spreadable paste.
Pat the halibut fillets dry and place them alongside the asparagus. Evenly spread the Parmesan mixture over the top of each fillet.
Bake for 10 to 12 minutes, then switch the oven to broil and cook for an additional 2 to 3 minutes until the topping is golden brown and bubbly.
Pat the halibut fillets completely dry with a paper towel before adding the topping. This helps the crust adhere better and prevents the fish from steaming.
Keep a close eye on the fillets when broiling. The topping can go from perfectly golden to burnt in a matter of seconds.
Don't overcrowd the pan. Ensure the asparagus and halibut are in a single layer to promote even roasting and browning.