Last summer, when I traveled to London, I was very fortunate to travel Premium Economy on Virgin Atlantic.
For breakfast, they served hash browns, sautéed spinach, tofu and a cherry tomato. It did require some salt and pepper, but I really liked the combination.
For a snack, a tea sandwich made with hummus and veggies with a side of sweetened dried cranberries. (I apologize for the image quality, the lighting was not exactly ideal).
And for dinner, it was Chana Masala with rice and vegetables, a green salad and fruit.
As far as airplane food goes, it was the best I've had.