For best results, use high-quality balsamic vinegar. Its flavor will be concentrated as it reduces. Don't overcrowd the baking sheet, as this will steam the onions instead of caramelizing them. If necessary, use two baking sheets. The balsamic glaze can be made ahead of time and stored in the refrigerator. Reheat gently before using.
Garnet Greenholtkertzmann
Jun 3, 2025Followed the recipe exactly and they were perfect. Thank you!
Ada Grant
May 21, 2025Next time, I'll try adding a little bit of honey to the balsamic reduction for extra sweetness.
Tiffany Damore
Apr 6, 2025I made these for Thanksgiving and they were a huge hit. Will definitely make again!
Orie Weimann
Mar 19, 2025The balsamic glaze is the perfect finishing touch. Adds so much flavor.
Triston Medhurst
Feb 27, 2025I didn't have fresh parsley, so I used dried. Still turned out great!
Raina Baumbach
Jan 18, 2025These were amazing! So easy to make and everyone loved them.
Litzy Johnson
Jan 9, 2025These caramelized beautifully! The frozen onions worked like a charm.
Jace Kemmer
Nov 21, 2024The onions were a little too tart for my taste. I might add a little sugar to the vinegar reduction next time.