marvelous marble cake - Lisi's Kitchen

Ingredients

• 3 ounces semisweet or bittersweet chocolate, finely chopped
• 4 large eggs, room temp, lightly beaten
• 2 teaspoons vanilla extract
• 1 1/2 cups cake flour
• 3/4 teaspoon baking powder
• 1/2 teaspoon kosher salt (use half if using table salt)
• 1 cup (2 sticks) unsalted butter, softened
• 1 1/4 cups sugar