If I want to bulk up a box of cake mix or muffin mix, do I need to add extra eggs/oil?

Penumbra
2023-07-23T05:57:18Z

For example, if I want to add ground flax to a brownie mix or oats to muffins? What if I want to add some extra dried blueberries to boxed blueberry muffin mix? The box instructions usually say 1/4 cup of oil and 1 egg, and I'm wondering if I need to double both or either if I want to add some more dry ingredients. Or is there maybe a max level at which I don't need to add extra oil/eggs, like a quarter cup at most of oats?

I know baking is a science and ratios are important, but still it'd be nice to have a way to make storebought convenience mixes a wee bit more filling or healthier. I'm used to substituting applesauce for oil in brownies, but I'm curious what else I could do with a storebought mix.

Comments URL: https://tildes.net/~food/18ij/if_i_want_to_bulk_up_a_box_of_cake_mix_or_muffin_mix_do_i_need_to_add_extra_eggs_oil

Votes: 17

Comments: 8