Watermelon Meringue Cake

I love these In the Bag events hosted by A Slice of Cherry Pie.  Two to three ingredients are chosen and all interested bakers participate in creating something using those ingredients.  Too much fun!  This month's ingredients were Watermelon and Mint.  At first I thought some refreshing drink. Then I thought fruit skewers. But THEN I took it a step further and thought...create something that you're actually good at. Cake!  It needed to be picnic "fun", summer light, and refreshing.   First, you will wonder why it's called a cake when you don't see a top layer. Then, you'll wonder why you don't see [...]