Homemade Cream Of Vegetable Soup Without The Can (low-carb option!)

Ingredients

• 3 tablespoons grass-fed butter
• 2 onions (diced)
• 4 carrots (cut into 1" rounds)
• 5 large potatoes (cut into 1" cubes; low-carb option: 2 celeriac)
• 3 cloves garlic (minced)
• 1 quart bone broth
• 2 bouillon cubes (preferably homemade, optional)
• 2 cups broccoli (frozen or fresh)
• 2 teaspoons sea salt
• 1 teaspoon ground black pepper
• 1/2 teaspoon ground white pepper
• 2 tablespoons grass-fed butter
• 2 tablespoons arrowroot powder (or flour)
• 1/2 cup milk
• 1 cup sharp cheddar (or any hard cheese, shredded)