Glossy Blueberry Ring (Microwave cake!)

"A wholesome blueberry cake covered with juicy, juicy glaze...This is a single serving recipe and guess what? It's made on a microwave. It's good for you (no refined sugar, no refined flour, but rich in fiber and antioxidants). It's mouthwatering and oh!...so addictive! This recipe is simple, fruity and a firework of textures and flavours. I'm a big fan of blueberries but you can try this recipe with strawberries or raspberries. It's up to you: choose your favourite fruit or the one you have at hand. Either way, it's like having the whole world in your hand...so precious and unique!"