Cheesy Hashbrown Casserole
- Prep Oven & Dish: Preheat your oven to 350°F (175°C) and grease a 9×13-inch casserole baking dish.
- Sauté Aromatics: Place a medium pot over medium heat on the stove-top. Add the olive oil, heat it through, and add the diced onion. Sauté until the onions begin to brown. Add the minced garlic, stir, and sauté until it becomes fragrant.
- Make the Sauce Base: Sprinkle the flour over the onions and garlic, and stir well for a few seconds. Slowly pour in the chicken stock, stirring constantly to prevent lumps. After that, pour in the milk while continuing to stir.
