Follow these clear steps to create your delicious Mashed Cauliflower Shepherd’s Pie:

1. Preheat Your Oven: Preheat the oven to 400°F (200°C).
2. Cook the Cauliflower: In a large pot, bring water to a boil and add the cauliflower florets. Cook until tender, about 10 minutes. Drain and set aside.
3. Prepare the Mashed Cauliflower: In a large bowl, mash the cooked cauliflower with butter, milk, salt, and pepper until smooth. Set aside.
4. Cook the Meat: In a large skillet, heat olive oil over medium heat. Add the minced onion and cook until softened, about 5 minutes.
5. Add Garlic and Veggies: Stir in the garlic, diced carrots, and ground meat. Cook until the meat is browned, about 7-10 minutes.
6. Incorporate Peas and Seasoning: Stir in frozen peas, tomato paste, Worcestershire sauce, thyme, and rosemary. Combine well and let simmer for 5 minutes.
7. Layer the Filling: Transfer the meat mixture into a 9×13 inch baking dish, spreading it evenly on the bottom.
8. Top with Cauliflower: Dollop the mashed cauliflower over the meat filling, spreading it evenly with a spatula or the back of a spoon.
9. Bake: Place the dish in the preheated oven and bake for 20-25 minutes, or until the top is slightly golden and the filling is bubbling.
10. Cool and Serve: Remove from the oven and let it cool for a few minutes before serving.

By following these steps, you’ll have a warm and hearty Mashed Cauliflower Shepherd’s Pie that’s both nutritious and delicious!