Prep the pomegranate: Cut off the crown, score the skin into quarters, and gently break it apart in a bowl of water.
Loosen the arils with your fingers. Skim off the white pith; drain and pat the arils dry.
Toast the nuts: Warm a dry skillet over medium heat. Add nuts and toast, stirring, until fragrant (3–5 minutes).
Cool completely. For candied nuts, toss with a little sugar and butter in the pan, then spread on parchment to set.
Make the vinaigrette: Whisk balsamic, Dijon, honey, salt, and pepper. Slowly stream in olive oil, whisking until glossy and emulsified.
Taste and adjust the sweetness or acidity.
Prep the produce: Rinse and dry greens thoroughly. Thinly slice the red onion. Slice the pear or apple just before assembling; toss slices with a squeeze of lemon to prevent browning if prepping early.
Assemble the base: In a large bowl, add greens, half the pomegranate arils, half the nuts, and a few onion slices.
Drizzle with a little vinaigrette and gently toss to coat.
Add toppings: Scatter remaining arils and nuts on top. Add the pear or apple slices and crumble the goat cheese or feta over everything.
Final dress and serve: Drizzle more vinaigrette just before serving. Finish with a pinch of salt and a crack of pepper for brightness.