Mushroom Salad Recipe - A Deceptively Tasty Salad

Ingredients

• 12 oz cremini mushrooms (chopped)
• 1 tbsp olive oil (divided)
• 1/2 tbsp unsalted butter
• 2 oz red onion (sliced)
• 2 oz yellow onion (sliced)
• 1/4 tsp salt
• 1 tsp lemon juice
• 1/4 tsp ground black pepper
• 4 oz arugula
• 1 oz walnuts (chopped)
• 1 oz feta cheese (crumbled)
• 2 tbsp parsley (chopped)