Cut beef into bite size pieces. Heat pan to medium - medium/high heat and add oil. sprinkle cornstarch over beef pieces then place into heated skillet. Brown on all sides.
While meat is browning, peel and dice potatoes, onion, & celery. Add veggies to a crock pot.
Add stock, crushed tomatoes, & frozen veggies to crockpot.
Add browned meat to crock pot with the veggies.
Add a 1/2 cup of broth to the pan the roast was browned in. Use a spatula to scrape up the leftover beef bits from the pan. Pour into crock pot.
Add seasonings. Mix and cover. Set crock pot to High for 4 hours or Low for 8 hours.
Enjoy!
