Gently fold them into the batter at the end.
This creates a lighter, soufflé-style cake with more volume.
Extra Creamy Version
Replace ¼ cup Greek yogurt with low-fat cream cheese.
This makes the cake richer and smoother, similar to cheesecake.
Healthy Add-Ins
To make the cake even more nutritious, try adding:
1 tablespoon chia seeds or flax seeds for extra fiber and omega-3 nutrients
¼ cup finely grated apple or zucchini (squeeze out excess moisture first)