Halibut with Sweet Lemon Sauce

Why I Love This Recipe
A fresh and light tasty spring/summer type dinner fish.
Not sure where I got this recipe, I've had it a while, somewhere online I think. . .
Ingredients You'll Need
Zest of 3 lemons
2 Tbs Sugar
1 Tbs Salt
1/3 cup + 1 tsp. fresh squeezed
lemon juice
3 Tbs Chopped fresh dill
4 8 oz. Halibut fillets or other firm white fish
1 Tbs Olive Oil
3 Tbs butter, cut up into small pieces
Directions
In a small bowl, combine the lemon zest, sugar, salt, 1 Tbs. lemon juice, and dill. Place fillets in a shallow dish and cover with marinade, refrigerate for about 3 hours.
Remove fish, set marinade aside and save for later.
Heat a large saute pan coated with oil.
Saute fillets util golden and cooked through, about 5 minutes each side.
Remove from heat and transfer fillets to a dish, cover to keep warm.
Turn heat up to high and add reserved marinade. When it bubbles and browns, add remaining lemon juice.
Cook 1 minute.
Reduce heat to low.
Add butter, swirling pan to melt.
Remove pan from heat, pour sauce over fillets and serve.