Step 1

Mix half the lime juice, 1/2 cup mayo, dressing mix and mustard in medium bowl until blended. Add crabmeat, 1/2 cup cracker crumbs and onions; mix lightly.

Step 2

Shape into 18 (1/2-inch-thick) patties; coat with remaining cracker crumbs.

Step 3

Cook, in batches, in large nonstick skillet on medium heat 2 min. on each side or until heated through and golden brown on both sides. Meanwhile, mix sour cream, lime zest, and remaining mayo and lime juice until blended.

Step 4

Serve crab cakes with the lime sauce.