Can You Use Powdered Sugar That Has Hardened or Formed Lumps?
Yes, you can definitely use powdered sugar that has hardened or formed lumps. Simply sift it through a fine mesh sieve to break up any clumps before measuring. Stirring and sifting also help incorporate the anticaking agents and prevent further clumping.
Your powdered sugar will be smooth, lump-free, and ready to use after sifting it.