add other ingedients until everything is in proper proportion or start over
you put a lot of sugar in it ! He He
It depends on what the recipe is
If it has been mixed into the recipe there isn't much you can do. If it hasn't try soaking up the excess with a piece of bread.
your cake will look and taste like goo in the oven
Adding too much liquid, be it wine, water.
no
If your cookie recipe has too much flour, you can adjust it by adding a bit more butter or liquid ingredients like milk or eggs to balance out the dryness.
No, it will add too much liquid to the recipe and not enough sweetness.
This depends on the recipe and how much less you put in. If its a tricky recipe using yeast like croissants or just yeast dough then the yeast molecules may not have enough starch and the dough may not rise as much. If its in anything else and its not a huge amount (less than a quarter of a cup) then just use less liquid. Keep the solid to liquid ratio equal. If its more than a quarter of a cup just make half a recipe.
Wouldn't recommend it. It'll add too much moisture to the recipe.
To fix a recipe with too much vanilla extract, you can try diluting the flavor by adding more of the other ingredients in the recipe. Alternatively, you can balance out the flavor by adding a complementary ingredient like sugar, salt, or acid. Adjusting the other flavors in the recipe can help reduce the overpowering taste of the vanilla extract.