In a skillet over medium heat, melt butter and sauté the onion and garlic until soft.
Add the ground beef, breaking it apart as it cooks. Cook until browned. Drain fat if needed.
Stir in the carrots, zucchini, and tomato paste, cooking for 3-5 minutes.
Pour in the bone broth, Worcestershire sauce, thyme, salt, and pepper. Let simmer for 5 minutes until slightly thickened.
Stir in frozen peas and remove from heat.