Wow this sounds GREAT. I can't wait to try it!
same recipe i use, i just reduce water by 1/2 cup and add one 15oz package of frozen sweetened or unsweetened strawberries, pureed. I also whip egg whites first. and fold in at the last.
I make cupcakes, but I use yellow cake mix, add 1 extra egg and 1/2 of a 10 oz pkg. frozen strawberries. I put the remainder of the strawberries in the frosting; however, you must increase the powdered sugar until the desired consistency is achieved. When the cupcakes cool I fill them with key lime pudding, 1 can sweetened condensed milk and 1/3 to 1/2 cup key lime juice. Top them with a fondant strawberry and people rave about them!