Cook until the onions and mushrooms have slightly golden color.
Add fish to the skillet and sprinkle salt and pepper over the skillet.
Pour lemon juice over the dish and cover.
Sauté until the fish is ready (about 10-12min), check occasionally.
Add broccoli florets and cranberries, pour coconut milk on top and sprinkle arrowroot flour.
Mix it together carefully around the fish pieces, cook until the gravy gets slightly thick.
Add more salt and pepper to taste. Approximately 5 more min.