Spicy Creamy Comfort Food

Ingredients

• 1 tablespoon light flavored olive oil
• 13-16 ounces andouille sausage, sliced into ¼-thick pieces
• 1 tablespoon butter
• 1 small yellow onion, chopped into ¼ inch pieces (about 1 cup)
• 2 celery ribs, sliced thin (about ½ cup)
• 8 large Yukon gold potatoes, chopped into ½ inch pieces (about 8 cups)
• 2 tablespoons chicken base or bouillon
• 4 cups water
• ⅓ cup all purpose flour
• 4 cups milk, divided
• 1½ teaspoons Cajun seasoning
• freshly ground black pepper, adjust to taste (ONLY if needed)
• kosher salt, adjust to taste (ONLY if needed)