In a large bowl, combine strawberries, bananas, 3 Tbsp flour, sugar, lemon juice & salt. Toss together gently to avoid bruising the bananas, Pour into a 9-inch baking dish or 6 ramekins.
Combine all ingredients for topping using fingertips to form a crumble. Completely cover fruit mixture with crumb topping.
Bake for about 40 minutes or until mixture is bubbling on the sides. Allow to sit for 15 minutes before serving with ice cream or whipped topping.