To get a head start, quarter the potatoes, and toss with half of the olive oil and 1 teaspoon lemon juice (to prevent browning). Refrigerate overnight in a zip-top plastic bag. Bring to room temperature before roasting.
3 tablespoons olive oil, divided
3 pounds small red potatoes, quartered (about 24)
1 teaspoon salt, divided
1/2 teaspoon black pepper, divided
3 garlic cloves, minced
2 tablespoons chopped fresh chives
3 tablespoons white wine vinegar
1 tablespoon Dijon mustard
1 1/2 teaspoons chopped fresh tarragon
How to Make It
Preheat oven to 400°.
Combine 1 1/2 tablespoons oil and potatoes on a large jelly-roll pan coated with cooking spray, tossing to coat. Sprinkle with 1/2 teaspoon salt and 1/4 teaspoon pepper. Bake at 400° for 40 minutes or until tender, stirring after 25 minutes. Add garlic; toss well. Bake an additional 5 minutes or until potatoes are done.
Combine remaining 1 1/2 tablespoons oil, remaining 1/2 teaspoon salt, remaining 1/4 teaspoon pepper, chives, and remaining ingredients, stirring with a whisk. Drizzle over potatoes; toss gently.