Start by preheating your oven to 250°F.
Spread the dried porcini mushrooms on a baking sheet and dry them further in the oven for about 15 minutes until they become brittle.
Once dried, allow mushrooms to cool down.
Use a blender or food processor to grind them into a fine powder.
This will be your crust.
Season the halibut fillets with salt and pepper and then coat them evenly with the porcini mushroom powder on both sides.
This creates a flavorful crust when cooked.
Heat olive oil in a heavy-bottom nonstick pan over medium flame.
Sear the halibut fillets until they are golden brown on each side, approximately 3 minutes per side.
In the same pan, add butter and minced garlic and sauté until fragrant.
Deglaze with white wine and lemon juice, and return the fillets to the pan for a final quick heat.
Serve hot.