Seared Tuna with capers

3 tablespoons extra-virgin olive oil 3 large garlic cloves , thinly sliced 1/2 cup red onion , thinly sliced 1 1/4-1 1/2 lbs albacore tuna , cut into 1-inch[...]

4 tuna steaks 1 teaspoon thyme , chopped 1 teaspoon olive oil 1 lemon , juiced 2 garlic cloves , minced 1 The marinade:. 2 Mix the thyme, lemon juice, garlic[...]