Directions:

Trim away any tough stem ends from the broccoli rabe, then cut the stalks crosswise into 2-inch pieces. Trim off the tough kale stems and cut the leaves crosswise into strips 1 inch wide. Cut off the white ribs from the Swiss chard and discard. Cut the green leaves crosswise into strips 1 inch wide.

In a large frying pan over medium heat, warm the olive oil. Add the broccoli rabe and kale and toss with tongs until they just begin to wilt, about 3 minutes. Add the Swiss chard and continue to toss until the broccoli rabe, kale and Swiss chard have wilted completely but are still bright green, 3 to 5 minutes longer.

Raise the heat to high and add the balsamic vinegar, garlic and red pepper flakes. Continue to cook, tossing constantly, until the ingredients are well mixed, about 1 minute. Season to taste with salt and pepper.