I am going to have to substitute vanilla extract for whipped cream. How much do I use?

Sure! You could add scented lotion or perfume. You could also use essential oils but make sure you like the smell you're adding into your slime. I would suggest only...

Anything may be used. Just keep it light and creamy so it doesn't detract from the rich, crumbly cake. If it is too heavy, the entire dessert will be ruined....

Use vanilla extract.

Go to the store and buy some. You can't really make this recipe without one of these essential ingredients. Other oils don't harden well so they can't really be used...

Start with one tablespoon and add a second if you want. Whipped cream just makes it thicker and creamier.

Most supermarkets sell it. You can get pure vanilla extract or imitation vanilla extract (which comes in a bigger bottle, and works exactly the same).

Yes, but you may have to alter some of the amounts as you go along if the consistency is wrong.

Yes, that would be fine, but the scent will be a lot lighter than the real extract.

If you are making Snickerdoodles and realize you don't have any cream of tartar, that's okay! Use lemon juice, vinegar, or baking powder for an easy substitution.