Pawhuska Cheese Steaks

• 1 1/2 lbs Deli roast beef, good-quality

• 1 Green bell pepper, thick

• 1 Red bell pepper, thick

• 1 Yellow bell pepper, thick

• 1 Yellow onion, thick

• 1 15-ounce jar Cheez whiz processed cheese sauce or spread, such as

• 3 dashes Worcestershire sauce

• 1/2 tsp Black pepper, freshly ground

• 1/4 tsp Cayenne pepper

• 6 Deli rolls

• 6 tbsp Butter