Get a pan on medium to medium-high heat.

Brush both sides of tuna with olive oil.

Salt & pepper both sides.

Once your pan is hot, begin cooking tuna, cooking for about 2 minutes on each side. To get an idea for how cooked your tuna is, just watch as the color changes the longer it cooks.

Once the first side has finished cooking, and you have flipped the tuna over, squeeze your lemon over top of the tuna.

This will give you a rare to medium-rare tuna (think of it like a regular steak! You still want it pink in the middle).

Once your tuna is done cooking, slice it and serve it on it's own, or on a bed of rice or salad.