Trim 1 1/2 pound beef roast and slice into 1/8 inch slices across the grain.
In a larger crock pot (6 quarts or so) add one 14 ounces can beef broth, 1/2 cup soy sauce, 1/3 cup brown sugar, one tablespoon sesame oil, 1/4 teaspoon crushed red pepper and four cloves crushed or minced garlic. Mix well
Add the beef to the crock pot and cook for 6 hours.
At the 5-hour mark mix two tablespoons cornstarch with 1/4 cup cold water. Add the cornstarch mixture and mix well. Add a one pound bag of frozen broccoli (about four cups). I added one drained 8 oz. can of sliced water chestnuts also.
Increase crock pot to high and cook for the final hour.