Heat oil and chopped garlic in Dutch oven and salt and pepper roast on both sides. Brown roast in heated oil. Add canned tomatoes, beef broth, salt and pepper, along with carrots and butternut squash. Allow to simmer for one hour. Remove roast and trim away visible fat. Cut into cubes and return to Dutch oven along with celery and onions. Add chipotle chile in adobo sauce, finely chopped. Allow mixture to simmer another hour on low heat. Enjoy!