Cannoli cakes and nigella lawson's chocolate banana cake

Ingredients

Cannoli Cakes:

• 3 large eggs
• 1/2 cup granulated sugar
• 1/4 teaspoon salt
• 1/2 cup butter, melted and cooled
• 1 cup King Arthur Unbleached All Purpose Flour
• 1/4 cup orange liqueur (such as Triple Sec) for brushing

Ricotta Topping:

• 1 cup ricotta cheese
• 1/2 cup confectioners' sugar
• 1 teaspoon vanilla
• pinch of salt
• 1 cup whipping cream, whipped and chilled
• 1 cup semisweet mini chocolate chips
• 1/2 cup finely chopped salted pistachios
• 1/2 cup dried cherries, chopped

For the cake:

• Vegetable oil or nonstick cooking spray, for cake pan
• 3/4 cup (1 1/2 sticks) butter
• 1 tablespoon olive oil 1 3/4cups flour
• 2 1/2 teaspoons baking powder
• 1/2 teaspoon baking soda
• 1/4 cup best-quality cocoa
• 1 cup sugar
• 2/3 cup sour cream
• 1 1/2 cups mashed banana (about 4 whole bananas)
• 1 tablespoon vanilla extract
• 3 large eggs
• Pinch of salt

For the icing:

• 1/2cup heavy cream
• 4 ounces semisweet chocolate, finely chopped
• 2 tablespoons light corn syrup
• Yellow sprinkles, optional.