Moist Banana Cake With Bourbon, Chocolate Chunks, and Crème Fraîche

Ingredients (10)

• 2 cups self-rising flour
• 1/2 teaspoon salt
• 1/2 cup unsalted butter, at room temperature
• 1 cup granulated sugar
• 2 large eggs
• 4 very ripe bananas, about 1 1/2 cups mashed
• 1/4 cup crème fraîche
• 3 tablespoons bourbon
• 1 cup semisweet chocolate, or bittersweet chocolate, chopped
• 2 tablespoons sweetened whipped cream, optional, for serving