Preheat oven broiler.
Cut tofu into small, ¼" thick rectangles
Combine 2 tablespoon of balsamic vinegar, 2 teaspoon Worcestershire sauce, 2 tablespoon olive oil, and ¼ C brown sugar to make marinade and pour over tofu.
Marinade tofu for at least 15 minutes and place on a baking sheet lined with foil and a baking rack. Sprinkle tofu pieces with salt. SAVE marinade.
Broil for 10-15 minutes on the middle oven rack, flipping each piece over halfway through. Cooking time will vary based on the temperature of your broil. Tofu is done when golden brown and slightly crisp around the edges.
While tofu is cooking, make the dressing by combining the reserved marinade with an additional 6 tablespoon of balsamic vinegar, ¼ C olive oil and minced garlic. Whisk until smooth.
Assemble salads with spring mix, red onions, raspberries, pecans, tofu and top with the dressing.