Recipe substitutions can be frustrating, leading to disappointing results. Common mishaps include altering textures with sugar substitutes, affecting taste with oil instead of butter, and dense outcomes from different flours. Replacing dairy, eggs, or leavening agents can also throw off the balance. Stick to the original recipe or research thoroughly before attempting substitutions. Especially if you attempt any of the substitutions people have shared in the comments section of various recipe websites, like the ones below.