Preheat oven to 400 degrees F. Combine onions and almond milk (or other milk) in a medium bowl. Let stand for 15 minutes. Drain (discard milk) and return to the bowl. Sprinkle with flour, pepper and salt and toss to coat. Transfer to a large rimmed baking sheet. Coat generously with cooking spray. Bake, stirring once or twice, until tender and crisp, 25 to 28 minutes.
Tips
To make ahead: The oven-fried onions can stand at room temperature for up to 2 hours.
Dining and Cooking