How to Make It
Preheat oven to 425°. Combine asparagus, 2 teaspoons olive oil, 1/8 teaspoon kosher salt, and pepper on a baking sheet. Bake at 425° for 9 minutes. Heat a large skillet over medium heat. Add 1 1/2 teaspoons olive oil; swirl to coat. Add onion to pan; sauté for 6 minutes. Stir in vinegar, thyme, and 1/8 teaspoon kosher salt. Top asparagus with onion mixture and crumbled blue cheese.