Toss strawberries and lemon in an ungreased 1-1/2 quart casserole. Mix 1/3 cup brown sugar and the cornstarch. Stir in the strawberries. Mix oats, flour, 1/3 cup brown sugar and salt. Blend in butter. Sprinkle over strawberries. Bake uncovered in a moderate oven until topping is light brown and strawberries are bubbly. About 40 minutes. Serve with ice cream. This is a great option to add to a fruit gift basket.