Name: Hot Chocolate Marble Cake
Prep time: 60 min
Cook time: 90 min
Yield: 12
Ingredients: 2 sticks (16 tablespoons) unsalted butter, at room temperature, plus more for the pan; 1 3/4 cups plain flour; 1/2 teaspoon fine salt; 4 large eggs, at room temperature; 2 tablespoons sour cream; 1 teaspoon pure vanilla extract; 1 1/4 cups sugar; 1/2 cup hot chocolate or cocoa mix