These boats are wonderful with tortilla chips, beans or rice. You can also cover them, pack them on ice, and take them to a picnic or potluck. Straight from the oven or cold, they're always delicious. —Frances Benthin, Scio, Oregon
Preheat broiler. Place 2 avocado halves in a large bowl; mash lightly with a fork. Add mayonnaise and lemon juice; mix until well blended. Stir in crab, 3 tablespoons cilantro, chives, serrano pepper, capers and pepper. Spoon into remaining avocado halves.
Transfer to a 15x10x1-in. baking pan. Sprinkle with cheese and paprika. Broil 4-5 in. from heat until cheese is melted, 3-5 minutes. Sprinkle with remaining cilantro; serve with lemon wedges.
Wear disposable gloves when cutting hot peppers; the oils can burn skin. Avoid touching your face.