Weight watchers friendly and delicious.
Many cooks chop broccoli floret-style with long stems intact, creating hard, woody bites that resist the dressing. Cut the broccoli crowns into uniform pieces no larger than one-half inch across so each spoonful contains balanced proportions. Sharp chef knives prevent crushing the cell walls of the broccoli, which preserves a vibrant green hue and prevents premature bruising. Slice the seedless grapes cleanly down their equators to expose the interior flesh, allowing the vinegar and sugar mixture to penetrate the fruit.
Fat-free mayonnaise lacks the natural oil content of traditional emulsion, meaning it separates easily when exposed to moisture from the produce. Whisk the mayonnaise, sugar, and vinegar vigorously in a separate bowl until completely smooth before coating the solids. This ensures the sugar dissolves entirely rather than settling at the bottom of the mixing vessel. Coat the vegetables thoroughly to seal the cut surfaces and retard moisture loss during the resting phase.
Allowing the mixture to rest for four hours or overnight in a sealed container softens the raw edge of the onion and tenderizes the dense broccoli florets. Maintain a refrigeration temperature below 40 degrees Fahrenheit during this maceration period to keep the bacon crisp and prevent bacterial growth in the fat-free mayonnaise base. Fold the sunflower seeds in immediately prior to serving if you prefer maximum crunch, preventing them from absorbing excess liquid and turning soft.