In online recipes of cheese & onion pasties, they call for raw potato and onion mixed with grated cheddar cheese. I am wondering if the chopped potatoes and onions cook properly in the oven, don't we need to use sauteed onions and boiled potatoes?

Link to a sample recipe

  • Great. Now I want a pasty. Oct 6, 2014 at 15:41

2 Answers 2


The raw potato will definitely cook through. If you cooked the potatoes first, they would be almost devoid of texture by the time they cooked a second time in the oven - you'd have something more akin to mashed-potato pastries on your hands.

You might want to think about sweating the onions first, though. Sweating them would drive-off some of their moisture and would mellow the taste of your pastry filling. Definitely not a requirement, but I think you'd prevent soggy pastry bottoms and serve-up a better tasting treat.

Also, your recipe throws-out the notion of brushing the pastry tops with milk or egg like they are interchangeable. Milk is traditionally used to soften the the crusts of breads - an egg wash will give your pastries a rich brown top. I have never seen a puff pastry recipe that called for a milk wash. Stick with the egg wash - beat a large egg with 1 Tbsp. water and brush the tops of your pastries lightly before parking them in the oven.

  • Very good answer, I agree on both points. Milk-wash on a pasty isn't going to give a good looking result.
    – GdD
    Oct 6, 2014 at 11:39
  • For a sweeter more interesting taste I would recommend that instead of raw onions you could add a teaspoon (each for each pasty) of caramelised onion relish. The other thing I use for things like this is red onions Oct 13, 2014 at 19:41

both can cook properly if baked long enough. For example, when preparing fried potato pancakes, they contain raw potatoes and onions as well.

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