PreparationFor crisps: Preheat oven to 350°F. Line large rimmed baking sheet with parchment paper. Arrange wonton triangles on sheet; brush each with olive oil and sprinkle with sesame seeds. Bake until triangles are golden brown, about 9 minutes. Cool on sheet. Do ahead Can be made 8 hours ahead. Let stand at room temperature. For tartare: Whisk first 5 ingredients in medium bowl to blend. Add tuna, avocado, cucumber, and green onion; stir gently to coat. Spoon tartare into bowl; sprinkle with sesame seeds and chives and place on platter. Spoon caviar into small bowl and place alongside. Surround with crisps.
PreparationFor crisps: Preheat oven to 350°F. Line large rimmed baking sheet with parchment paper. Arrange wonton triangles on sheet; brush each with olive oil and sprinkle with sesame seeds. Bake until triangles are golden brown, about 9 minutes. Cool on sheet. Do ahead Can be made 8 hours ahead. Let stand at room temperature. For tartare: Whisk first 5 ingredients in medium bowl to blend. Add tuna, avocado, cucumber, and green onion; stir gently to coat. Spoon tartare into bowl; sprinkle with sesame seeds and chives and place on platter. Spoon caviar into small bowl and place alongside. Surround with crisps.