Cut the fennel bulb into quarters. Reserve some of the fronds for garnish.
Cut the pears into 8 pieces.
Arrange the fennel and pears on a baking sheet.
Drizzle olive oil over the top. Season with salt and pepper. Toss to make sure they are thoroughly coated.
Roast the fennel and pears for 15-20 minutes until they are fork tender but still have their shape.
While the pears and fennel are roasting make your dressing. Use a whisk to whisk together all of the ingredients for the vinaigrette. You can also use a milk frother or food processor to help emulsify it.
Spread the dressing onto a plate.
Arrange the pears and fennel on top of the dressing.