/ck/ - Food & Cooking

I don't want to be that guy who comes to someone else's board and asks for help, but I have a problem that's not very common. As a child, I was diagnosed with sensory processing disorder. tl;dr: I'm sensitive to taste and other senses. Now that I'm out of the house during school and mostly responsible for myself, I'd like to learn how to cook my own meals (instead of microwaving, eating frozen food, etc.). The big problem is that I'd like to introduce new and healthier foods into my diet, but gag uncontrollably when food has too complex a texture or flavor. The only way around this is to force myself to eat something privately for a while to get used to it. It's much easier to do with foods that are relatively homogeneous in texture and flavor. For example, I am fine with most meats, potatoes, bread, green beans, and other relatively "plain" foods. What foods would you recommend I try adding to my diet to help overcome these issues?