Line a baking sheet with parchment paper or aluminum foil.
In a mixing bowl, whisk together the olive oil, balsamic vinegar, and minced garlic.
Add the asparagus and pearl onions to the bowl and toss to coat evenly.
Arrange the vegetables in a single layer on the prepared baking sheet.
Season with salt and pepper.
Bake for 20 minutes, or until the asparagus is tender yet firm, and the onions are soft and translucent.
Serve immediately.
Notes / Tips / Wine Advice:
Serving Tip:Serve warm as a side dish with grilled tofu, roasted potatoes, or a light grain salad.Wine Advice:Pair with a crisp Sauvignon Blanc or a dry Riesling.