1. 1. Preheat the oven to 400°F (200°C).

2. 2. Grease four ramekins with butter and dust with cocoa powder.

3. 3. In a microwave-safe bowl, melt 1/2 cup of butter and 8 oz of semisweet chocolate until smooth.

4. 4. In a separate bowl, whisk together 2 eggs, 2 egg yolks, 1/4 cup of sugar, and a pinch of salt until pale and fluffy.

5. 5. Gently fold the melted chocolate mixture into the egg mixture until well combined.

6. 6. Divide the batter evenly among the prepared ramekins.

7. 7. Bake for 12-14 minutes until the edges are set but the center is still soft.

8. 8. Let the cakes cool for a minute before flipping them onto serving plates.

9. 9. Serve immediately with a scoop of vanilla ice cream or a dusting of powdered sugar.