Funky Monkey Doughnut with Nutella Recipe

INGREDIENTS

• 1 3/4 teaspoons active dry yeast
• 6 teaspoons warm water
• 1/2 cup whole milk
• 2 Tablespoons vegetable shortening
• 3 Tablespoons unsalted butter
• 2 Tablespoons warm water
• 1 large egg, beaten
• 1/4 cup granulated sugar
• 1/2 teaspoon salt
• 2 1/2 cups unbleached all-purpose flour (divided), plus extra for dusting surface
• vegetable oil, for frying (fill a French oven with about 2 inches of oil)
• 3 ripe bananas, sliced thick
• 5 Tablespoons unsalted butter
• 3 Tablespoons light brown sugar
• 4 ounces cream cheese, softened
• 3 Tablespoons unsalted butter, softened
• 2/3 cup powdered sugar
• 2 1/2 Tablespoons whole milk
• 1/4 to 1/2 nutella (chocolate hazelnut) spread (optional)
• brown sugar for sprinkling (optional)