Roasted Asparagus Salad | Dinner Tonight

Ingredients

• 1/4 cup red onion (sliced very thin)
• 1/3 cup red wine vinegar
• 1 lb fresh asparagus spears (trimmed )
• 3 cups fresh arugula ((can substitute spinach))
• 2 tbsp fresh mint (minced)
• 3 tbsp olive oil extra virgin (divided)
• 1/4 tsp salt
• 1/8 tsp black pepper