Yes, absolutely! While the recipe features specific ingredients for a classic taste of Strawberry Quark Buns, there are several substitutes you can consider to cater to dietary preferences or ingredient availability. If you can’t find quark, cream cheese is an excellent alternative that retains the creamy texture and tanginess. For a dairy-free option, you might use non-dairy cream cheese or even a silken tofu blend, although this will slightly alter the flavor. When it comes to the flour, you can experiment with whole wheat flour for added nutrition, though it may change the buns' texture to be denser. Additionally, if you're looking to reduce sugar, consider using natural sweeteners like maple syrup or honey, keeping in mind this may also affect the dough’s consistency. Always remember to adjust the moisture levels in the dough if your substitutes alter the dry-to-wet ratio.