How to Make It
Preheat oven to 425°. Unfold puff pastry sheets, and place side by side on a baking sheet, overlapping short sides 1/2 inch. Press seam to seal. Score a 1/2-inch border on all sides, using a knife. Do not cut through pastry.
Toss together pumpkin slices, next 3 ingredients, and 1 tsp. olive oil in a large bowl. Spread mixture in a single layer on prepared pastry sheets, leaving a 1/2-inch border.
Bake at 425° for 20 to 22 minutes or until pastry is golden brown. Cool on a wire rack 10 minutes.
Toss together arugula, next 3 ingredients, and 1 tsp. olive oil in a medium bowl. Add salt and pepper to taste. Sprinkle mixture over tart, and cut into desired shapes.