Mix 0. 5 cups (48g / 1.69 oz) fine almond flour, 2 tsp. (2g / 0.07 oz) dried chives, 1 tsp. (3g / 0.11 oz) garlic powder, 2 tsp. (2g / 0.07 oz) dried dill, and 2 tsp. (4g / 0.14 oz) onion powder together.
Spread the dry mixture evenly all over a large plate.
Place a large pan over medium-high heat.
Add 3 tbsp. (42. 5g / 0.18 oz) butter and 1 tbsp. (15ml) lemon juice.
Place the 14 oz (396g) Gurnard fillets into the pan and cook for 3 minutes. Move the fillets around the pan so that they absorb the melting butter and lemon juice.
Add the remaining 3 tbsp. (42. 5g / 0.18 oz) butter and 1 tbsp. (15ml) lemon juice to the pan.
When the butter completely melts, flip the fillets over to the other side and cook until fully done and tender.
Pat the Fish Dry: Before coating your Gurnard fillets in the almond flour mixture, thoroughly pat them dry with a paper towel. This ensures the crust sticks to the fish and helps achieve a beautiful, golden sear rather than steaming in the pan.
Don't Overcook: Gurnard cooks relatively fast. You'll know it's perfectly done when the thickest part of the fillet flakes easily with a fork and turns opaque.