Step 1

Preheat the oven to 375 F and generously grease a 10- by 6-inch baking dish with butter.

Step 2

Scatter the blackberries over the bottom of the prepared baking dish.

Step 3

Sprinkle the lemon juice and almond extract evenly over the blackberries.

Step 4

In a large bowl, mix the flour, sugar, salt and egg to a shaggy consistency.

Step 5

Scatter the topping over the blackberries.

Step 6

Drizzle the margarine evenly over the top.

Step 7

Bake until the topping is golden brown and the blackberries are bubbly.

Step 8

Scoop into shallow bowls and serve with a scoop of ice cream or a dollop of whipped cream.