Low Fat Lime Cake Recipe

• Nonstick vegetable oil spray
• 1 3/4 c. all-purpose flour
• 2 1/4 tsp baking pwdr
• 1/2 tsp salt
• 1 c. sugar
• 3 Tbsp. vegetable oil
• 2 Tbsp. unsalted butter - (1/4 stick) room temperature
• 4 lrg egg whites
• 2 Tbsp. fresh lime juice
• 1 Tbsp. grated lime peel
• 1 tsp vanilla extract
• 2/3 c. low-fat buttermilk

Directions