Pour the sauce, including the onions and apples, into a blender or food processor and pulse until smooth. Return the sauce to the pan, and reheat over medium-low; stir in 2 tablespoons cream, and heat until warm. Serve sauce spooned over sliced tenderloin. Oct 31, 2021 · Foolproof Blender Hollandaise Sauce Yummly. large egg yolks, water, unsalted butter, finely grated lemon zest and 2 more. Mango Curd KitchenAid. large egg yolks, granulated sugar, large egg, lime juice, salt and 2 more. Hollandaise Sauce KitchenAid.