Heat a large skillet over medium heat and add a drizzle of oil. Sauté chopped onions and minced garlic until fragrant, about 3-4 minutes.

Add ground beef or lamb, cooking until browned, about 5-7 minutes. Mix in diced carrots and peas, cooking for an additional 3-4 minutes.

Pour in vegetable broth, stirring to combine. Allow the mixture to simmer for 10-12 minutes until thickened.

Peel and chop potatoes, boil until tender (15-20 minutes). Drain and mash with butter and milk, season with salt and pepper.

Preheat oven to 400°F (200°C). Layer the filling in a baking dish and top with mashed potatoes, creating texture for spooky effect.

Drizzle ketchup or tomato sauce over the mashed topping, add olives or black beans as 'eyes'. Bake for 25-30 minutes until golden.

Let cool for 5 minutes, then serve on spooky-themed dinnerware.