In a large bowl combine oil, sofrito, minced garlic, oregano, adobo, sazon, salt and pepper with the citrus juice.
Season all sides of the chuck roast generously with the marinade. Optional: make small slices on the roast with knife. Marinate for overnight, rest in room temperature 1 hour before searing.
Preheat oven to 350 degrees F (180 degrees C).Place your dutch oven or oven-safe pot over medium high heat. Add a bit of oil and wait until it’s hot then add the seasoned chuck roast.
Sear the chuck roast on each side until it gets a deep brown crust, about 3 minutes per side. Add beef broth or stock. If you want to use remaining marinade make sure to dilute with 1/2 cup of water. Cover with oven safe lid or aluminum foil and place in oven.
Bake the roast for 3 to four hours, checking at three hours for tenderness. Once fork tender, take the roast out of the oven. Let the pot roast rest for 10-15 minutes before serving.
Serve with Arroz con Gandules and Potato salad for the best flavor experience!