Creamy Zucchini Soup with Cheddar Cheese and Potatoes

Ingredients

• 2 tbsp butter
• 1 yellow onion, peeled and diced
• 3 garlic cloves, peeled and minced
• 1/4 tsp dried rosemary
• 1/4 tsp dried thyme
• pinch of dried oregano
• 1/4 tsp celery salt
• salt
• pepper
• dash of cayenne pepper (optional)
• 5 cups fresh chopped zucchini
• 3-4 cups chicken broth
• 1 tbsp soy sauce
• 1 lb russet potatoes, washed, peeled, and diced
• 1/2 cup heavy cream, at room temperature
• 1 1/4 cups shredded cheddar cheese, at room temperature