Heat broiler Place dinner rolls, cut side up, on a baking sheet. Place under broiler and lightly toast, turning baking sheet to toast rolls evenly.
In a medium bowl, toss lettuce, celery, and carrots with dressing. Divide the mixture over the bottom halves of the rolls.
Coat a large nonstick skillet with cooking spray and place over medium-high heat. When pan is hot, add 1 tablespoon of the butter and shrimp; saute 2 minutes or until shrimp are almost cooked through.
Add remaining 1 tablespoon butter and hot sauce to skillet; continue to cook, stirring shrimp in "Buffalo" sauce with a slotted spoon, until cooked through, about 1 minute. Spoon shrimp and sauce over lettuce mixture, sprinkle with blue-cheese crumbles, and place roll tops, toasted side down.