Method

1. To make the filling: Preheat the oven to 350°F.

2. Toss the plums, sugar, and cinnamon sticks in an 8-inch square baking dish.

3. Arrange the mixture evenly in the dish tucking the cinnamon sticks beneath the plums.

4. To make the topping: Mix the flour, sugar, and oats in a medium bowl to blend.

5. Using your fingers, rub the butter into the flour mixture until moist clumps form.

6. Mix in the almonds. Sprinkle the crumb topping evenly over the plum mixture.

7. Bake for 45 minutes, or until the juices bubble, the fruit is tender and the topping is golden brown.

8. Allow the crumble to stand at room temperature for 5 minutes to cool slightly.

9. Spoon the crumble into bowls and serve with vanilla ice cream.