Southern Cobb Salad with Roasted Sweet Onion Dressing

This salad dressing is really delicious, but the directions are less than precise. Roasting the onions in a very hot oven for the time presribed would result in charcoal. My onions nd garlic were beautiful roasted in about 45 minutes. Once the onions are slightly cooled and the garlic peeled, it's short work to pop everything into the food processor and whizz away. The oil amount is i found too much -- a scant cup more than sufficed. Also the final yield, even with less oil, provides enough dressing for several sizable salads, Good thing it's delicious. As for the salad as a whole (my version no sprouts, no corn, no pecans, lots of chickpeas) it's great.