Can I use butter instead of cooking spray?

It's important to get to the tops and bottoms of the leaves and the stems, and a watering can will only get the top surface. Better to use a spray...

Yes, butter can be used, but it may alter the crust and crumb.

I always use cooking spray. For me, it makes sure that nothing sticks, and it's easy to just spray on. But, coconut oil spray works just as well.

Olive oil can be replaced with coconut oil, shea butter can be replaced by cocoa butter and beeswax alternatives can be other edible waxes.

Don't boil the milk. It should work for a few days if you're careful and preserve it. Store the milk and honey in the fridge.

Yes, you can use oil -- it just won't be as crispy. You can use your spatula to flatten the potatoes and manipulate their shape.

Yes, you can.

Yes! Just keep in mind that if you add melted peanut butter instead of room temperature peanut butter, you may need to add powdered sugar to even out the consistency.

No, you cannot. Cooking spray is only to prevent foods from sticking to a pan. It's not a replacement for oil as an ingredient.

Yes, but make sure you use a little because otherwise the product will taste oily.