Apple Crumb Bars Recipe: How to Make It

Ingredients

• 3 cups all-purpose flour
• 1-1/2 cups old-fashioned oats
• 1-1/2 cups packed brown sugar
• 3/4 teaspoon baking soda
• 1-1/4 cups cold butter, divided
• 5 to 6 cups thinly sliced peeled apples
• 1 cup sugar
• 3 tablespoons cornstarch
• 1 cup cold water
• 1 teaspoon vanilla extract
• Vanilla ice cream, optional