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Keto Dinner

Basil-Tomato Tuna Steaks

This basil-tomato tuna steaks recipe has become my weeknight savior when I need a keto-friendly dinner in under half an hour. The combination of fresh basil, juicy tomatoes, and melted mozzarella transforms simple tuna steaks into something special. It’s light yet satisfying, with bright Mediterranean flavors that never feel like a compromise.

10 min Prep time 8 min Cook time 18 min Total time 4 Servings 214 Calories
Basil-Tomato Tuna Steaks

Ingredients

  • tablespoon olive oil
  • (4 ounce) tuna steaks
  • /2 teaspoon salt
  • /8 teaspoon pepper
  • /3 cup fresh basil leaves
  • medium tomato, chopped
  • /4 cup shredded part-skim mozzarella cheese

Instructions

  1. Step 1

    I start by heating a large nonstick skillet over medium heat with the olive oil. Once the oil shimmers, I carefully lay the tuna steaks in and let them sear undisturbed for about 3 minutes on that first side. A gentle nudge with a spatula tells me they’re ready to flip when they release easily. After flipping, I cook for another 3 minutes, or until the fish flakes with a fork. Then I transfer the steaks to a broiler pan lined with foil for easy cleanup. At this point, I season the tops with salt and pepper, then layer on the fresh basil leaves, the chopped tomato, and finally a sprinkle of mozzarella. Under the broiler, set 4 to 6 inches from the heat, it only takes about 2 minutes for the cheese to melt into a bubbly, golden blanket. I love how the basil infuses the tuna with its aroma while the tomato adds a pop of freshness. It’s a straightforward method that yields a restaurant-quality dish right at home.

Chef's Tip

I always pat the tuna steaks dry before seasoning; this ensures a nice sear instead of a steamed texture. And if you’re doubling the recipe, work in batches to avoid overcrowding the pan.

Storage Tips

Refrigerate leftovers in an airtight container for up to 2 days. Reheat gently in a skillet over low heat or enjoy cold over a salad to keep the tuna moist.

Variation Tips

Swap tuna for salmon or halibut if you prefer a different fish. For a dairy-free version, replace mozzarella with a sprinkle of nutritional yeast or a dollop of dairy-free pesto.

Frequently Asked Questions