Steamed Pineapple Coconut Cake

• non-stick cooking spray
• 8 oz canned crushed pineapple
• 3 oz unsweetened shredded coconut
• 4 oz plain Greek yogurt
• 2 oz vegetable oil
• 4 oz sugar
• 1 large egg
• 1 tsp vanilla extract
• 3 oz all-purpose flour
• ½ tsp baking powder
• ⅛ tsp baking soda
• ¼ tsp salt
• 35 oz water

Whipped Topping

• 4 oz heavy whipping cream, chilled
• 1 - 2 tsp confectioners sugar, to taste