Preheat oven to 400 degrees Fahrenheit. On a large baking sheet, add tomatoes, onions, garlic, salt, pepper, Italian seasoning, basil, and oregano. Drizzle olive oil on top, and toss to coat.
32 ounce cherry tomatoes, 1 large onion, sliced, 6 peeled garlic cloves, Salt to taste, Black pepper to taste, 1 Tablespoon dried Italian seasoning, 1 cup fresh basil, 1/2 cup good quality olive oil, 1 teaspoon dried oregano