1. Stir together cornstarch and 3/4 cup sugar in a large saucepan. Add
frozen berries, lemon juice, and vanilla, and bring to a boil;
stirring constantly; boil for 1 minute. Pour into a lightly greased
2 quart baking dish.
2. Combine baking mix and 2 tbs. sugar. Cut in softened butter
with a fork or pastry blender until mixture is crumbly; stir in egg
and milk. Drop by 2 tbs. onto hot berry mixture.
3. Bake at 400 for 20 - 25 min. or until cobbler is golden and bubbly.
Serve warm with toppings.