French Dip Pinwheels

Name: French Dip Pinwheels
Prep time: 20 min
Total time: 20 min
Cuisine: American
Ingredients: Cooking spray; 2 tbsp. butter; 2 large onions, thinly sliced; 2 sprigs fresh thyme; Kosher salt; Freshly ground black pepper; All-purpose flour, for surface; 2 (8-oz.) can crescent dough; 8 slices provolone cheese; 1/2 lb. deli roast beef; 2 tsp. fresh thyme leaves; 1 tbsp. butter; 1 garlic clove, minced; 1 1/2 c. low-sodium beef stock; 1 tbsp. Worcestershire sauce; 1/4 tsp. fresh thyme leaves