Two suggestions, slightly contradictory, but either will work: 1.) Spices. there are loads of really interesting, amazing spices out there, but even a simple s

Two suggestions, slightly contradictory, but either will work: 1.) Spices. there are loads of really interesting, amazing spices out there, but even a simple sautée of olive oil, lemon juice, garlic, salt, and black pepper can make almost any vegetable taste amazing. 2.) Stop eating over-flavoured foods. Doritos etc. have a ridiculous amount of flavouring; if you eat foods like this consistently then you'll desensitise your palette to the subtler but still absolutely lovely tastes of vegetables, in the same way that staring into a spotlight makes it difficult to appreciate the aesthetic qualities of twilight. You can't re-sensitise your palette by simply cutting down on hyperflavoured food; you need to eliminate it almost completely. After a while, you'll discover that brocoli and green beans are wonderful, and Doritos are absolutely brutal on the tongue.