Fall Fruit Crumble

Ingredients

• 2 cups fresh or thawed frozen cranberries
• 2 firm-ripe pears such as Bartlett, peeled and cut into 1/2-inch pieces
• 2 apples such as Gala, peeled and cut into 1/2-inch pieces
• 1 cup sugar, divided
• 1 1/2 tablespoons cornstarch
• 3/4 teaspoon pure vanilla extract
• 1 cup old-fashioned oats
• 1/2 cup all-purpose flour
• 1/4 teaspoon salt
• 1 stick unsalted butter, softened