Place sugar in a small heavy skillet; cook and stir over medium-low heat until melted and caramel-colored, about 10 minutes. Stir in almonds until coated. Spread on foil to cool. , Place romaine, onion and strawberries in a large bowl. Whisk together dressing ingredients; toss with salad. Break candied almonds into pieces; sprinkle over salad. Serve immediately.