- 4 slices thick-cut bacon, cut into 1″ pieces
- 1 small red onion, sliced 1/4″ thick
- 1/2 pound chanterelles or crimini (baby bella) mushrooms, cut into pieces
- 1 garlic clove, finely grated
- 1/4 cup red wine vinegar
- 2 teaspoons sugar
- 1 teaspoon Dijon mustard
- 1/4 cup extra-virgin olive oil
- Kosher salt, freshly ground pepper
- 8 ounces hearty greens (such as mustard greens, spinach, or baby kale), torn
- 1/2 cup crumbled blue cheese
- Cook bacon in a large skillet over medium heat, stirring occasionally, until crisp, 8–10 minutes. Using a slotted spoon, transfer bacon to a paper towel–lined plate.
- Cook onion in same skillet, stirring occasionally, until softened and lightly browned, 6–8 minutes, using a slotted spoon, transfer to plate with bacon. Repeat with mushrooms. Remove skillet from heat. Add garlic, vinegar, sugar, and mustard, scraping up browned bits. Whisk in oil; season dressing with salt and pepper.
- Toss greens, warm dressing, bacon, onion, and mushrooms in a large bowl; season with salt and pepper and top with cheese.