Yes! Some ideas I have: for the almond base layer, you can substitute with sunflower seeds, pumpkin seeds, or rolled oats in equal quantities, or unsweetened coconut flakes (use 3/4 the amount). For the cashew cream layers, replace cashews with tahini (1:1 ratio), coconut cream blended with coconut oil, sunflower seed butter (1:1 ratio with coconut milk), or blanched hemp seeds. When using seed butters, add an extra tablespoon of coconut oil for creaminess and blend longer to ensure smoothness. The texture may vary slightly from the original, but it should taste good! Of course, if he's allergic to any of these, let me know and I'll put my thinking cap back on ;p

Isn't it amazing? And I love that you can now make things with protein that don't taste gross.