1. Season the tuna steaks with salt and pepper.

2. Heat a skillet and add butter. Place the tuna steaks in the skillet and cook for about 3-4 minutes on each side until they have a nice crust.

3. While the tuna steaks are cooking, finely chop the garlic and slice the tomatoes.

4. In another skillet, heat some butter and sauté the chopped garlic until fragrant. Then add the tomato slices and simmer for about 5 minutes.

5. Meanwhile, bring a large pot of salted water to a boil. Add the linguine and cook al dente according to the package instructions.

6. Remove the pan-seared tuna steaks from the skillet and set aside.

7. Drain the cooked linguine and return it to the pot. Add the tomato sauce and mix well.

8. Add arugula and sliced bell pepper to the linguine and mix everything together.

9. Place the tuna steaks on top of the linguine or serve them on the side.

10. Enjoy!