Best Spinach Soup Recipe - How To Make Spinach Soup

Ingredients

• 2 tbsp. extra-virgin olive oil
• 1 onion, chopped
• 1 bunch green onions, chopped
• 2 cloves garlic, minced
• 1 russet potato, peeled and chopped into 1/2" cubes
• 1 lb. spinach, thick stems trimmed
• 4 c. low-sodium chicken or vegetable broth
• Kosher salt
• Freshly ground black pepper
• 1/2 c. heavy cream, plus more for garnish
• 3 tbsp. butter
• 1 c. cubed bread