Food Network teaches how to crush, slice and mince garlic. Peel off some of the papery skin from the garlic and then smash the head of garlic with the heel of your hand to loosen the cloves; if you only need a few cloves, leave the head intact and pull some off. Separate the cloves. To peel a clove, cut away the root end with your knife. Lay the flat side of the knife over the clove while holding the knife handle, then with the heel of your free hand carefully whack the knife against the garlic to separate the skin from the clove. To crush the peeled garlic, lay the flat side of the knife over the clove and smash it again. To slice peeled garlic, lay the clove flat on the cutting board and hold it with the fingertips of one hand, keeping them curled under. Using a rocking motion with the knife, make thin slices by moving the knife slowly across the clove. To mince peeled garlic, lay the flat side of a knife over the clove and smash it. Roughly chop the clove then move your free hand flat across the tip of the knife and use a rocking motion to chop the garlic until it’s finely minced.
Put an oven rack in the center of the oven. Preheat the oven to 450 degrees F. Butter an 8 by 8-inch glass baking dish. Set aside.
In a food processor, blend together the crushed tomatoes and garlic. Pour into a medium bowl and add the uncooked pasta, 1/3 cup olive oil, oregano, salt, and pepper. Toss until all the ingredients are coated.
Line the bottom and sides of the baking dish with tomato slices. Pour the pasta mixture into the pan and spread evenly. Arrange the remaining tomato slices in an overlapping layer on top of the pasta mixture, making sure the mixture is completely covered. Drizzle with olive oil. Bake until the tomatoes are slightly crispy and the pasta is cooked, about 1 hour. Remove from the oven and cool for 5 minutes before serving.