Mix together the Greek yogurt, 1/4 cup banana, egg whites, and vanilla extract into a small bowl.In a separate bowl combine flour, baking soda, 1/2 teaspoon sugar, and salt.
Combine both bowls and whisk until evenly mixed.Fold in 5 fresh, chopped strawberries.
Add 1/4 cup mashed banana, 5 frozen strawberries, and 1 teaspoon of sugar in a sauce pan (if you use fresh strawberries, add 1 tablespoon of water to the sauce pan). Cook on low, stirring frequently until thickened (about 5-7 minutes.)Evenly divide sauce over top of pancakes