Preheat your oven to 400°F (200°C). Gather your ingredients and equipment.

In a medium bowl, combine grated parmesan cheese, breadcrumbs, minced garlic, melted butter, olive oil, lemon juice, salt, and pepper. Mix until wet sand-like.

Prepare a baking sheet lined with parchment paper to prevent sticking.

Arrange halibut fillets on the baking sheet and press the crust mixture onto each fillet, about 1/4 inch thick.

Bake the halibut for 12-15 minutes, until the crust is golden and the fish flakes easily with a fork.

Let the halibut rest for a minute after removing from the oven, then garnish with fresh parsley and serve.