Combine biscuit mix,milk,egg,melted butter and
chocolate.Mix to combine thoroughly.In a
blender,combine strawberries and banana.Blend a few
seconds,until semi liquid.Add to cake mixture and mix
thoroughly again.Pour into a 9" square baking pan and
bake at 350 deg.for about 30 minutes,until a toothpick
stuck in the cake center comes out clean.(It is an
extremely moist cake,so toothpick will always have
some moisture on it.) Serve warm or cold..