Go For Big Chunks
Whether it's a salad, soup, stir-fry, or casserole, keep the veggies in big chunks. Not only will it take less time to prepare your recipe, but chomping down on big pieces of veggies requires more chewing and more effort. That means it will take longer to eat your meal, and you'll end up feeling more satisfied, which translates to eating less food afterward. Or try the opposite approach and cut up your food into tiny bites — it'll trick your brain into thinking there's more on your plate, so it feels like you're eating more than you actually are.