低脂低卡的“布朗尼”，无油糖无面粉，减脂期放心吃，做法超简单

配方：山藥200克，香蕉1根，雞蛋2個，南瓜泥40克，可可粉8克
Recipe: 200 grams of yam, 1 banana, 2 eggs, 40 grams of pumpkin puree, 8 grams of cocoa powder