A Greek seasoning mixture gives this pork roast recipe it's Mediterranean interest. Flavors meld together as it simmers in the slow cooker.
Place fennel in slow cooker bowl. Rub pork with 1 teaspoon of the Greek seasoning and place in bowl on top of fennel.
Scatter tomatoes around pork. Pour 1/3 cup of the broth in bowl; top with 2 teaspoons Greek seasoning, 1/2 teaspoon of the salt and 1/4 teaspoon of the pepper. Cook 3 hours on HIGH or 6 hours on LOW.
Blend remaining 2 tablespoons broth, the cornstarch and Worcestershire. Remove pork to a serving platter; keep warm. Strain liquid from slow cooker into a small saucepan; place vegetables around pork.
Bring liquid to a boil over medium-high heat. Whisk in cornstarch mixture, remaining 1 teaspoon Greek seasoning and 1/4 teaspoon each salt and black pepper; cook 1 minute. Spoon sauce over pork. Sprinkle with olives, if desired.