Can you tell us more about the recipe? Pound cake? Layer cake? Sponge? Is this a butter or oil based cake? What leavening agent is currently used and in what proportion? Is there milk or buttermilk in this cake?
In general, you won't be able to substitute the full amount of AP flour for whole wheat. I'd start with 1/4 whole wheat, 3/4 AP flour and see how it behaves. Better yet, I would spring for whole wheat pastry flour if you really want to use whole wheat 100%. The grain of it will be finer, it will weigh less and perform better in a cake recipe. Whole wheat will be less noticeable in a chocolate cake or in a spice cake than in a plain vanilla cake.
Also, I'd really recommend investing in a whole grain pastry book if you are interested in the topic.
I like Good to the Grain by Kim Boyce: http://www.amazon.com/Good...
and the King Arthur Flour Whole Grain Baking Book: http://www.amazon.com/Arthur...
HalfPint is a trusted home cook.
If you do a 100% swap-out for the white flour, you're going to get a very dense cake that will not rise much, if at all. General rule is to substitute no more than 50% if you want the texture to remain soft and light. Even then, the cake will not rise as much. I would look for a whole grain cake recipe as suggested by Hilarybee. No need to reinvent the wheel.
Cynthia is a trusted source on Bread/Baking.
Hillarybee's suggestion to pick up some whole wheat pastry flour is excellent. At that, though, she is correct that you still shouldn't go all in for 100% of it in your recipe. 25% would be a good start, and for the balance I'd suggest cake flour rather than AP flour. WW pastry flour has a protein content of about 9%, whereas that of cake flour is closer to 7%. 1:3 ratio will still give you a tender cake with a good rise.
Please enter a valid email address.
Well played. You deserve a cookie.
Community member em-i-lis cooks from Amanda & Merrill's new book
Make Weeknight Cooking Smoother and Stress-Free
Almond Apple Pie
This Week's Fall Cookbook Cake Parade
Jet black desserts—boo!
Unexpected Places We Found Food This Week
prevented successful signup:
We'll never post anything without your permission.
prevented successful login:
Thanks for signing up!
Connect with us to get more Food52!
Sign up for our useful, inspired emails and we'll
give you everything you need to eat and live better—including
recipes, how-tos, and exclusives and great gift ideas from our
kitchen and home shop.