These doughnut holes are filled with salted caramel pastry cream and drizzled with salted caramel sauce. Before making the doughnuts, prepare one recipe Salted Caramel Sauce and let cool to room temperature. Alternatively, purchase 1½ cups caramel sauce and add salt to taste, 1-2 tsp. You'll need 1 cup of salted caramel sauce for the pastry cream filling and about another ½ cup to drizzle over the doughnut holes before serving.