Recipe Tip You can also preheat the griller in the oven, place the slices on a baking sheet, and bake them for 4-5 minutes. Share your version of this recipe How do you make a Prawn Mayo Sandwich at home? What ingredients do you use? Share your version with us! Frequently Asked Questions Can I make Finger sandwiches with this recipe? Yes. You can make finger sandwiches with this recipe. Can I add more herbs and seasonings to this recipe? Yes. You can add more herbs and seasonings of your choice to this recipe.