Most pastry sold in grocery stores has palm oil (its use is harming the habitats of orangutans and other endangered creatures, and ‘sustainable palm oil’ labels are just self-policed greenwash).So the best option is to make your own pastry. Try this 3-ingredient pie crust (Full of Plants).
If used, choose vegan butters without palm oil. Keep recipes away from pets (fresh dough can expand in the stomach and some pastry contains unsafe ingredients like onion, garlic, nutmeg, chocolate). Read more on food safety for people & pets.
The Veg Space has a good post to make your own shortcrust pastry, that’s easy to make, roll and freeze (you can also try variations for cheese, mustard, herb, vanilla, almond or chocolate pastry). Be sure to chill the ingredients before use.
Doves Farm has a good simple recipe that simply rubs flour and salt into cubed vegan butter, then mixes into a dough with just enough water. Cover with a tea towel and leave 15 minutes, then roll onto a floured surface, shape and bake. Also try this easy pie crust (add maple syrup for sweet pastry) or Puff pastry (From the Comfort of My Bowl).
