01 -
Combine extra virgin olive oil, kosher salt, and black pepper in a large bowl and whisk until fully emulsified. Add onion rounds and gently turn with hands or tongs until each slice is coated edge to edge.
02 -
Preheat grill to medium-high heat (approximately 400°F). Position onion rounds directly on grill grates or arrange in a grill basket for easier handling.
03 -
Grill the onions for 5 to 7 minutes per side, turning once, until pronounced grill marks form, the edges caramelize, and onions release easily from the grates.
04 -
While onions cook, whisk together balsamic vinegar, maple syrup, and garlic powder in a small bowl until smooth. In the final 2 minutes of grilling, brush the glaze liberally onto both sides of the onions, allowing it to bubble and develop a glossy, mahogany finish.