Cook the quinoa and chai tea in double the amount of water for 15-20 minutes, after about 5 minutes remove the tea bags and add sugar. Peel 2 bananas and mash them with a fork. Mix quinoa flakes, cocoa and baking powder. Let quinoa cool down for about 10 minutes.
Mix cooked quinoa, dry ingredients, crushed bananas and almond milk, place in an ovenproof dish, sprinkle with cocoa chips and bake in a preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: see manufacturer) for about 20 minutes.
Coarsely chop the hazelnuts. Peel the remaining bananas and cut in half lengthwise. Take the casserole dish out of the oven. Spread the hazelnuts and bananas over it, drizzle with the chocolate sauce and serve.