Beer Baked Scalloped Potatoes Recipe

• vegetable cooking spray
• 1 tsp vegetable oil
• 1 1/2 c. onion, sliced vertically
• 1 c. beer
• 2 lb red potatoes, peeled cut into 1/8-inch slices
• 1/2 tsp salt, divided
• 1/4 tsp pepper, divided
• 2 Tbsp. all-purpose flour
• 1/2 c. skim lowfat milk
• 1/2 c. grated swiss cheese

Directions