Rhubarb Crumble

Ingredients (12)

• 3 cups sliced fresh or frozen rhubarb (1/2-inch pieces)
• 1 cup diced peeled apples
• 1/2 to 1 cup sliced strawberries
• 1/3 cup sugar
• 1/2 teaspoon ground cinnamon
• 1/2 cup all-purpose flour
• 1 teaspoon baking powder
• 1/4 teaspoon salt
• 4 tablespoons cold butter
• 2/3 cup packed brown sugar
• 2/3 cup quick-cooking oats
• Vanilla ice cream, optional