Allergen Substitutes
Below are some common allergens & substitutes that can be used in cooking/baking. I've also included my personal opinions and favorites:
Milk - rice milk, oat milk, almond milk, soy milk, pea milk
These options may be limited based on your allergens, but rice and oat milk are generally safer
From a taste and consistency perspective, I've found oat milk to be the best option (works great for lattes & baked dishes)
Almond milk is great if you're looking for a low calorie alternative (just not as creamy as oat milk)
Eggs - Just Egg (or similar), egg replacer, bananas, apple sauce, aquafaba (frothed liquid from can of chickpeas)
For omelets and similar dishes, Just Egg works great (but it's a bit pricey)
For sweet baked dishes, I love using bananas - just make sure they're very ripe when you use them
I'm personally not a fan of the aquafaba taste, but if you are then it can work great as well
Soy - coconut aminos, soy free substitute
I don't generally use either, but coconut aminos obviously has an allergen, but the soy free substitutes don't always contain common allergens
Cheese - vegan cheese, nutritional yeast
Nutritional yeast works great when you want something sprinkled on top of your food (not melted). It doesn't taste exactly like cheese, but it's super nutritious (ha ha ha...) & has lots of protein
Kite Hill & Daiya also have some great products for vegan cheese. Drawbacks are they often have coconut oil (if you're allergic) and don't melt the same way normal cheese does