Creating the marvelous Keto Beef and Mushroom Casserole is a delightful journey that involves these simple steps:

1. Preheat your oven: Set your oven to 375°F (190°C) to ensure it’s ready for the casserole.

2. Cook the beef: In a large skillet, heat olive oil over medium heat. Add ground beef, seasoning with salt and pepper. Cook until browned, about 5-7 minutes.

3. Sauté vegetables: Add chopped onions and minced garlic to the skillet with the beef. Sauté until onions are translucent, around 3-4 minutes.

4. Add mushrooms: Incorporate sliced mushrooms into the skillet and cook until they are tender, about 5-6 minutes.

5. Stir in herbs: Sprinkle dried thyme and oregano into the mixture. Stir thoroughly to combine.

6. Create the creamy filling: Pour in the heavy cream, allowing it to meld with the other ingredients. Mix well for a minute or two until heated through.

7. Add cheese: Stir in half of the shredded cheddar cheese, allowing it to melt into the mixture.

8. Transfer to baking dish: Pour the beef and mushroom mixture into a greased 9×9 inch casserole dish, spreading it evenly.

9. Top with cheese: Sprinkle the remaining cheddar cheese over the top of the casserole.

10. Bake: Place the dish in the preheated oven and bake for 20-25 minutes or until the cheese is bubbly and golden brown.

11. Garnish: Once baked, remove from the oven and let it cool for a few minutes. Garnish with freshly chopped parsley before serving.

With these steps, your Keto Beef and Mushroom Casserole will come together seamlessly!