Want to get the most out of your late summer tomatoes and eggplants? Try the simple two-step prep we use for these easy crostini.

We start by salting and draining the eggplants and tomatoes.This removes excess water, which not only makes for a meatier texture, it also concentrates the flavors.After the draining, the vegetables are roasted, which caramelizes their natural sugars, further deepening the flavors. The result is incredibly rich and naturally sweet.The whole thing gets tied together with a sweet-tangy balsamic glaze and bit of salty Parmesan.Tangy Tomato-Eggplant CrostiniStart to finish: 30 minutesServings: 62 large yellow onions, quartered and slicedExtra-virgin olive oilKosher salt2 small eggplants, diced1 pint cherry tomatoes, halvedToasted, sliced French breadBalsamic glaze, to serveGround black pepperParmesan cheese, to serveWatercress, to serveHeat the oven to 450 F. Line a rimmed baking sheet with foil and coat with cooking spray.In a large skillet over medium heat, cook the onions with a drizzle of olive oil and a pinch of salt, stirring regularly until caramelized, 18 to 20 minutes. If the onions begin to stick, add a teaspoon or 2 of water.Meanwhile, in a mesh strainer over the sink or a bowl, combine the eggplants and tomatoes.Sprinkle in several hefty pinches of salt, then toss lightly. Allow to sit for 15 minutes to drain excess liquid.Spread the mixture on the prepared baking sheet and drizzle with olive oil. Roast for 15 to 18 minutes, or until tender and browned.In a large bowl, combine the eggplant, tomatoes and caramelized onions. Spoon the mixture onto slices of toasted French bread, then drizzle with balsamic glaze and sprinkle with black pepper.Top with some of the Parmesan cheese and watercress. Serve immediately.Nutrition information per serving: 200 calories; 35 calories from fat (18 percent of total calories); 4 g fat (1 g saturated; 0 g trans fats); 0 mg cholesterol; 36 g carbohydrate; 7 g fiber; 10 g sugar; 7 g protein; 580 mg sodium.