Okay, so maybe this will take more than five minutes, but not more than ten. And while I made this with cauliflower this could easily be adapted to other vegetables as well. The key factors are onion, garlic, spices, and caramelizing the vegetable. It is really easy, and this is how I made it.
Slice as much cauliflower as you'll eat about 1/4" thick. Heat a heavy skillet over medium heat with a few tablespoons oil (I used olive oil). When the pan is hot but not smoking, add the cauliflower in a single layer; it should begin to sizzle a bit when it hits the pan; if it seems too hot reduce the heat. While the cauliflower is cooking, slice a small onion. Turn the cauliflower over (it should be browned on one side) and sprinkle the onion in the pan. As the cauliflower and onion cooks, mince a clove or two of garlic and add it to the pan with a teaspoon or two of curry (or whatever spices you like) along with a pinch of kosher salt. Shake the pan to toss everything in the spices and garlic, allow it to cook for another minute, then shake the pan again. Cut a lemon in half and squeeze its juice over the cauliflower and shake the pan again. Transfer everything to a plate and eat it as a healthy snack, a component to a salad, or as a side dish (I ate it as a side to Lebanese-style lamb and brown rice; click here for recipes). The cauliflower is delicious hot, at room temperature, or chilled.