Instant Pot Sticky Toffee Pudding

Name: Instant Pot Sticky Toffee Pudding
Ingredients: 5 ounces dates, pitted and chopped into 1/2-inch pieces; 9 tablespoons (1 stick) unsalted butter, at room temperature, plus 1 tablespoon for the pan; 1/2 cup almond flour, plus more for the pan; 3/4 cup oat flour; 1/2 teaspoon baking powder; 1/2 teaspoon baking soda; 1/4 teaspoon ground allspice; 1/4 teaspoon ground cinnamon; 1/4 teaspoon ground ginger; 1/8 teaspoon ground clove; 1/2 teaspoon kosher salt; 1 cup dark brown sugar; 2 large eggs, at room temperature; 3/4 cup packed dark brown sugar; 1/2 cup heavy cream; 6 tablespoons unsalted butter; 1 teaspoon vanilla extract