Step-by-Step Instructions:
Preheat the oven to 425°F (218°C).
- Melt butter and chocolate in a double boiler until smooth.
- Whisk eggs, egg yolks, and sugar in a separate bowl until light and fluffy.
- Gently fold the chocolate mixture into the egg mixture.
- Add flour and salt, folding until combined.
- Pour the batter into buttered ramekins.
- Bake for 10-12 minutes. The edges should be firm, but the center will be soft.
- Let them cool for 1 minute, then invert onto plates.
- Dust with powdered sugar before serving.
