Combine flour, garlic powder, salt, and pepper. Toss beef in flour mixture.
Heat olive oil in a large Dutch oven or pot over medium-high heat. Shake off any excess flour from
the beef
and brown in small batches. Remove and set aside in a bowl.
Add the onions to the pot, adding more oil as needed, and cook until they begin to soften, about 3
minutes.
Add beef broth and red wine while scraping up any brown bits in the pan.
Stir in browned beef, potatoes, carrots, celery, tomato paste, and rosemary. Reduce heat to
medium-low,
cover, and simmer 1 hour or until beef is tender (up to 90 minutes).
Mix equal parts cornstarch and water to create a slurry. Slowly add the slurry to the boiling stew
to reach
desired consistency (you may not need all of the slurry, if you'd like a thicker stew, you can add
extra).
Stir in peas and simmer 5-10 minutes before serving . Season with salt & pepper to taste.
Chef's notes
Stew meat is often made from the ends of different cuts of beef. If your beef is not tender after 60
minutes, allow it to simmer an additional 15-20 minutes or until tender.