01 -
Pat beef chunks dry with paper towels and season with salt and pepper, tossing to coat evenly.
02 -
Heat olive oil in a large skillet over medium-high heat. Working in batches, quickly brown meat on all sides for extra flavor. This step can be skipped if you're in a rush.
03 -
In a bowl, whisk together beef broth, soy sauce, Worcestershire sauce, brown sugar, tomato paste, garlic, smoked paprika, onion powder, and red pepper flakes until well combined.
04 -
Transfer meat to slow cooker. If using vegetables, scatter them around and on top of the meat. Pour sauce over everything, making sure all meat is coated.
05 -
Cover and cook on low for 6-8 hours or on high for 3-4 hours, until meat is fork-tender and melts in your mouth.
06 -
About 20 minutes before serving, mix cornstarch with cold water until smooth. Stir into slow cooker, cover, and cook on high for 15-20 minutes until sauce thickens.
07 -
Spoon tender beef and rich sauce over mashed potatoes, rice, or egg noodles. Garnish with fresh parsley if desired and serve hot.