In a skillet over medium heat, brown the ground beef until fully cooked. Drain excess grease and set aside.
In the slow cooker, combine the diced potatoes, sliced carrots, chopped onion, and minced garlic.
Add the browned ground beef to the slow cooker, mixing it with the vegetables.
Stir in the diced tomatoes (with juice), beef broth, frozen peas, Worcestershire sauce, dried thyme, and dried oregano. Season with salt and pepper to taste.
Cover the slow cooker and set it to low heat for 6-7 hours or high heat for 3-4 hours, allowing the stew to cook until the vegetables are tender.
Once cooked, stir the stew gently and adjust seasoning if necessary before serving.