In a large bowl, mix together the olive oil, ricotta, goat cheese, feta, garlic, salt, lemon juice, and basil. Use a spoon to combine as much as possible, although it doesn't need to be perfect. When combined as much as you can by hand, stir in half of the tomatoes.
1 tablespoon olive oil, 1 cup low-fat ricotta cheese, 8 ounces goat cheese, ¾ cup crumbled feta cheese, 1 clove garlic, ¼ teaspoon kosher salt, 1 teaspoon lemon juice, ¼ cup chopped fresh basil, ¼ pound yellow cherry tomatoes, ¼ pound red cherry tomatoes