Heat grill to medium-high. With a fork, prick the sausages in several places. Grill, turning occasionally, until cooked through, 10 to 12 minutes.
Meanwhile, brush the tomatoes and onion with 1 tablespoon of the oil and season with 1/2 teaspoon salt and 1/4 teaspoon pepper. Grill until tender, 5 to 6 minutes per side for the onion and 2 to 3 minutes per side for the tomatoes. Transfer the vegetables to a large bowl as they are done, add the spinach, and toss.
In a small bowl, whisk together the vinegar, mustard, the remaining 3 tablespoons of the oil, 1/2 teaspoon salt, and 1/4 teaspoon pepper. Slice the sausages and serve with the vegetables and dressing.
Tip: Tossing the spinach with warm vegetables wilts the leaves slightly and makes them more tender. Delicious on its own, this salad is also great mixed into pasta.
You May Like
Sign Up for our Newsletter
Join our newsletter for free recipes, healthy living inspiration, and special offers.