Remove the peel and cut the onion in large chunks. Add to the container of a high speed blender such as a Vitamix, along with the vinegar, sugar, mustard, salt and pepper. Blend until well pureed.
Scrape down the sides of the container, and then, while the machine is running, slowly drizzle in the oil through a hole in the top. The dressing will become thick and creamy.
Taste to adjust any of the seasonings. Keep refrigerated until needed. Note: this recipe makes more than you'll need for this salad, keep the leftover in the fridge and plan to use within 2 weeks.
for the salad
Put the lettuce in a large salad bowl and add each of the other ingredients. If you'd like to do a composed salad you can arrange them attractively in little piles around the lettuce, otherwise just dump them all in.
Lightly dress and then toss the salad. Serve more dressing on the side.
Nutritional information is provided as a courtesy and is an estimate only. This information comes from online calculators. Although The View from Great Island attempts to provide accurate nutritional information, these figures are only estimates.
Did You Make This?We love seeing what you've made! Tag us on social media at @theviewfromgreatisland for a chance to be featured.