
Prep Time:
5 mins
Cook Time:
35 mins
Total Time:
40 mins
Servings:
4
Yield:
4 tuna steaks
Ingredients
Directions
Heat olive oil in a heavy-bottomed skillet over medium heat. Cook and stir onion in hot oil until softened and translucent, about 5 minutes. Reduce heat to medium-low. Continue to cook and stir until onion is very tender and dark brown, 15 to 20 minutes more. Remove onion to a plate.
Place tuna steaks in the same skillet over medium-high heat and cook until golden brown, about 2 minutes per side. Remove tuna steaks to a serving tray; keep warm.
Stir together vinegar and sugar in the same skillet until sugar is dissolved. Return onion to the skillet and simmer until liquid reduces and is slightly thickened, about 5 minutes. Return tuna steaks to the skillet and cook for 3 to 5 minutes. Place tuna on the warm serving tray and top with onion and sauce.
Nutrition Facts (per serving)
| 500 | Calories |
| 12g | Fat |
| 58g | Carbs |
| 40g | Protein |





