Five-Ingredient Pineapple Upside-Down Cake

Instructions

1. Preheat oven to 190°C (375˚F).
2. Melt 30ml (2 Tbsp) butter in a 22.5-cm (9-in) round, flameproof, aluminum pan over medium-low heat (make sure to cover entire pan bottom); sprinkle sugar over top. Carefully place pineapple rings in a single layer in bottom of pan. Increase heat to medium-high and cook until pineapple caramelizes, flipping once, about 2 minutes per side; remove pan from heat.
3. Melt remaining 30ml (2 Tbsp) butter on stove top or in microwave. In a medium-size mixing bowl, beat egg with remaining melted butter. Add cake mix and reserved pineapple juice; combine well.
4. Pour batter over pineapple; bake until a toothpick inserted in centre of cake comes out clean, about 30 to 35 minutes. Allow cake to cool for about 15 to 20 minutes; when still warm, loosen sides with a knife and invert cake onto a serving plate. Slice into 10 pieces and serve. Yields 1 slice per serving.