Heat a large nonstick skillet over medium heat. Chop bread into bite size pieces. Add extra-virgin olive oil, butter and garlic to the skillet. Melt butter into oil then add the bread. Season the bread with salt and pepper. Toss and cook the bread 7 to 8 minutes then add the tomato sauce and fresh tomatoes. Turn to coat and warm the tomato sauce, 3 to 4 minutes.
Remove the bread gnocchi and tomatoes from heat and transfer to a flameproof casserole dish, top with basil then cover the dish with cheese. Place the casserole under the broiler and cook 2 to 3 minutes, until the cheese browns and bubbles. Serve immediately.