Combine canola oil and lemon juice in a medium bowl. Cut pears into ½” slices and gently toss in oil and lemon juice. Place pears on a rimmed cookie sheet and roast 20 minutes, or until pears are tender and lightly golden.
Toast bread and add favorite condiment or Goat Cheese Yogurt Spread to one side of each slice, top with spinach and pears, lightly press bread together.