Chocolate Brick Cake

Step 1: Prepare Your Ingredients
Preheat the Oven: Start by preheating your oven to 180°C (350°F). Grease a rectangular or square baking pan (20 cm x 20 cm or similar) and line the bottom with parchment paper for easy removal.
Step 2: Melt Chocolate and Butter
Melt Together: In a medium heatproof bowl, combine the dark chocolate and unsalted butter. Melt them together gently over a double boiler or in the microwave in short intervals (15-20 seconds), stirring until smooth. Allow the mixture to cool slightly.
Step 3: Whip Eggs
Beat the Eggs: In a large bowl, crack the 4 eggs and beat them until they are light and frothy. You can use a hand whisk or an electric mixer for this step.
Step 4: Combine Mixtures
Combine Ingredients: Slowly pour the melted chocolate and butter mixture into the beaten eggs while whisking continuously, ensuring that the eggs do not scramble. Mix until well combined and the batter is smooth.
Step 5: Bake the Cake