Prepare pasta according to package directions. Generously salt the water to season the pasta. Once cooked al dente, drain and rinse under cold water. Set aside to cool to room temperature.
Remove stems from broccoli and cut into bite-size pieces.
Combine chopped broccoli, cooked pasta, and halved grapes in a large bowl.
In a small bowl, whisk together all dressing ingredients: full-fat mayo, sour cream, mustard, red wine vinegar, honey, lemon juice. Season to taste with salt and pepper. Whisk until smooth.
Combine dressing with grapes, broccoli, and pasta. Cover and chill for 30 minutes to 2 hours.
Right before serving, add chopped pecans (see note 1), cooked and crumbled bacon, and diced red onion (see note 2).
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Notes
Note 1: I like to toast the pecans. To do this, spread them evenly in a dry pan over low heat. Stir around 5–7 minutes or until fragrant. Be careful because the nuts can easily go from toasted to scorched.Note 2: To take away the bite of the red onion, peel and dice it, then submerge the pieces in a bowl of cold or ice water. Let sit for at least 10 minutes, stirring once or twice, before draining and using in this salad.Storage: Salad is best eaten the same day it is made.