Try this homemade Herb-Buttered Grilled Onion Bloom (Foil Packet) recipe the whole family will love. Made with yellow onion, butter, thyme and rosemary.…
This Herb-Buttered Grilled Onion Bloom (Foil Packet) relies on simple, everyday ingredients such as butter, dried rosemary, crumbled, salt and fresh ground black pepper. It comes together quickly and makes 4 servings, at about 2163 kcal each. The step-by-step instructions below are written to be easy to follow, even on a busy day.
It's versatile enough for an easy weeknight dinner yet satisfying enough for guests at the weekend. Serve it with your favorite sides, and keep any leftovers for a quick meal the next day.
Updated Jun 30, 2026