Vegan Green Bean Casserole with Creamy Chickpea Sauce - Half Cup Habit

Ingredients

• 1 tsp olive oil (extra virgin)
• 1 onion (yellow; chopped)
• 1 pound green beans (cut; frozen or fresh)
• 1 1/2 cups chickpeas (cooked; or 1 (15 oz.) can per 1 1/12 cups, drained and rinsed)
• 1 1/4 cups water
• 1 garlic
• 1 1/2 tsps salt (divided)
• 1 sprig rosemary (fresh (1 sprig is about 1 tsp minced))
• pepper (black; freshly ground)
• 1 tsp balsamic vinegar
• 1/2 cup hazelnuts (dry roasted, skins removed)
• 1/4 tsp salt (for topping)