*I used the vanilla protein powder from Quest, but any whey/casein blend or baking-intended protein powder will do just fine. I know that almost if not all protein baking blends contain artificial sweeteners, so I know this may be a dealbreaker for some of you. But fret not! (Side note, I admire you. I also try to avoid artificial sweeteners, but alas I do cheat.) In terms of replacing the blend here, I recommend buying unsweetened/naturally sweetened whey and casein powders separately and creating your own blend with 60% whey and 40% casein. This is also a good way to save money! Now, a note for my plant-based friends. I’m head-over-heels for some vegan protein powders, namely Sun Warrior, but I’m not sure vegan powders will work here. You’ll have my eternal love and gratitude if you try this with a vegan powder and/or vegan egg replacer and report back, but proceed with caution as I have absolutely no idea if that will work.