Rhubarb Oatmeal Bars Recipe

Ingredients

• 1-1/2 cups chopped fresh or frozen rhubarb
• 1 cup packed brown sugar, divided
• 4 tablespoons water, divided
• 1 teaspoon lemon juice
• 4 teaspoons cornstarch
• 1 cup old-fashioned oats
• 3/4 cup all-purpose flour
• 1/2 cup sweetened shredded coconut
• 1/2 teaspoon salt
• 1/3 cup butter, melted