Cook broccoli rabe in a large pot of boiling water until bright green and barely tender, 1 to 2 minutes. Drain in a colander and gently press out as much water as possible.
Heat oil in a Dutch oven or large skillet over medium-high heat. Add the broccoli rabe and cook, stirring, until tender, 3 to 4 minutes. Remove from the heat; stir in sun-dried tomatoes, vinegar, salt and pepper.
1 vegetable, 2 fat