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A steaming bowl of cozy winter casserole, perfect for cold evenings.

Classic Cozy Winter Casserole Dinner

This hearty casserole combines tender ground beef and vegetables in a savory sauce, topped with creamy mashed potatoes, puff pastry, or biscuits. It's a perfect comforting meal for cold winter nights.
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Prep Time 20 minutes
Cook Time 45 minutes
Total Time 1 hour 5 minutes
Servings: 6 people
Calories: 400
Ingredients Equipment Method Notes

Ingredients
  

Casserole Filling
  • 1 tbsp olive oil
  • 1 lb ground beef (or turkey/lamb)
  • 1 large onion, diced
  • 3 cloves garlic, minced
  • 2 carrots, chopped
  • 2 celery stalks, chopped
  • 1/4 cup all-purpose flour (or gluten-free blend)
  • 4 cups beef broth (or vegetable broth for vegetarian option, ensure gluten-free if needed)
  • 2 tbsp tomato paste
  • 1 tsp dried thyme
  • 1/2 tsp dried rosemary
  • 1 bay leaf
  • 1 cup frozen peas
  • 1 cup frozen corn
  • Salt and freshly ground black pepper to taste

Equipment

  • Oven-safe skillet or Dutch oven
  • Casserole dish

Method
 

Preparation
  1. Dice the onion, mince the garlic, and chop carrots and celery into bite-sized pieces to prepare your ingredients.
  2. Heat olive oil in an oven-safe skillet or Dutch oven over medium-high heat, then brown the ground beef, breaking it up and draining any excess fat.
  3. Add diced onion to the skillet and cook until softened, then stir in minced garlic, carrots, and celery, cooking until slightly soft.
  4. Sprinkle flour over the meat and vegetables, then gradually stir in beef broth, tomato paste, thyme, rosemary, and bay leaf. Simmer for 10-15 minutes until the sauce thickens, stirring in peas and corn during the last 5 minutes. Season with salt and pepper and remove the bay leaf.
  5. While the filling simmers, prepare your chosen topping: warm mashed potatoes, or preheat your oven and prepare puff pastry or biscuits according to package directions.
  6. Transfer the hot filling to an oven-safe casserole dish if not using a Dutch oven, then spread the prepared topping evenly over the filling.
  7. Bake in a preheated oven at 375°F (190°C) for 20-30 minutes, or until the topping is golden brown and the filling is bubbling.
  8. Let the casserole rest for 5-10 minutes before serving, and garnish with fresh parsley or chives if desired.

Notes

For a richer flavor, you can caramelize the onions a bit longer before adding the garlic. If you're short on time, pre-chopped vegetables can be used. This recipe freezes well; simply thaw and reheat in the oven until warmed through.