Prepare the Batter

1. Preheat Oven: Set your oven to 425°F (220°C). Grease four 6-ounce ramekins with butter and lightly dust with cocoa powder to prevent sticking.
2. Melt Chocolate and Butter: In a microwave-safe bowl, melt the chopped chocolate and butter together in 20-second intervals, stirring in between until smooth. Let it cool slightly.
3. Whisk the Eggs and Sugar: In a separate bowl, whisk the eggs, egg yolks, powdered sugar, and vanilla extract until light and slightly frothy.
4. Combine Ingredients: Gently fold the melted chocolate into the egg mixture, stirring continuously.
5. Add Flour and Salt: Sift in the flour and salt, then fold everything together until just combined.

Bake the Lava Cakes

1. Divide the Batter: Pour the batter evenly into the prepared ramekins.
2. Bake: Place the ramekins on a baking sheet and bake for 12-15 minutes, until the edges are firm but the center is still soft.
3. Cool Slightly: Let the cakes rest for 5 minutes before serving.

Serve and Enjoy

1. Loosen the Edges: Run a knife around the edges of each ramekin.
2. Invert the Cakes: Place a small plate over each ramekin and carefully flip to release the cake.
3. Garnish: Dust with powdered sugar, top with ice cream, or add fresh berries.
4. Dig In! Enjoy the rich, gooey molten center of your lava cake.