Prep the Beef: Season the beef cubes generously with salt and pepper.
Sear the Meat: In a large skillet over medium-high heat, add olive oil. Once hot, add the beef cubes in batches, searing on all sides until browned (about 4-5 minutes). Remove the beef and set aside.
Sauté Vegetables: In the same skillet, add chopped onions and minced garlic. Sauté until onions are translucent (about 3-4 minutes).
Combine Ingredients: Add the browned beef back to the skillet with the sautéed onions and garlic. Stir in tomato paste, Worcestershire sauce, thyme, and rosemary. Mix well.
Transfer to Crock Pot: Transfer the beef mixture to a crock pot and add the carrots, potatoes, and beef broth. Stir to combine all ingredients.
Cook: Cover and cook on low for 8 hours or high for 4 hours, until beef is tender and vegetables are cooked through.
Thicken the Stew (Optional): If you prefer a thicker stew, mix cornstarch with a little cold water to make a slurry, then stir it into the stew 30 minutes before serving. Cook on high for an additional 30 minutes to thicken.
Garnish and Serve: Once cooked, taste and adjust seasoning if necessary. Serve hot, garnished with fresh parsley.
Notes
Optional thickening with cornstarch can be adjusted based on preference.