Step 1: Preheat oven to 450°F (230°C) and line a baking sheet with parchment paper.
Step 2: In a medium bowl, whisk together flour, water, garlic powder, salt, and pepper until smooth.
Step 3: Toss cauliflower florets in the batter until evenly coated, then arrange in a single layer on the baking sheet.
Step 4: Bake for 20-25 minutes until cauliflower is tender and coating is crispy.
Step 5: While cauliflower bakes, whisk together buffalo sauce and melted butter in a large bowl.
Step 6: Remove cauliflower from oven and immediately toss in the buffalo sauce mixture until fully coated.
Step 7: Return cauliflower to baking sheet and bake for 5 more minutes.
Step 8: Warm tortillas according to package directions.
Step 9: Assemble wraps by spreading ranch dressing on each tortilla, then adding lettuce, carrots, celery, buffalo cauliflower, and blue cheese if using.
Step 10: Roll tortillas tightly, slice in half diagonally, and serve immediately.