In medium-sized bowl, mix butter and sugar until well combined. Add eggs, one at a time, and whisk until incorporated. Mix in cocoa powder and fold in melted chocolate. Divide batter evenly among Ramekins and place inside the Shielded Colander of the Tupperware® Smart Multi-Cooker.
Cook and serve
Fill water base/reservoir with 1¾ cups/400 mL water and place shielded colander with Ramekins over it. Cover with Shielded Cover and microwave on high power for 10 minutes. Let rest for 2 mins, serve warm.