Put berries in jar. Add 1/4 teaspoon of lemon juice to each jar.
In a medium bowl, lightly beat the egg, Stir in the sugar and flour until it is crumbly. Sprinkle a generous 2 Tablespoons of crumbs over each jar of berries.
Stir in the sugar and flour until it is crumbly. Sprinkle a generous 2 Tablespoons of crumbs over each jar of berries.
Melt butter and drizzle 1/2 Tablespoon over each jar.
Bake for 25-30 minutes or until the berries and bubbly and the topping is golden.