Spinach Dip in a Bread Bowl

2 cups (16 ounces) sour cream
1 envelope (1 ounce) ranch salad dressing mix
1 package (10 ounces) frozen chopped spinach, thawed and well drained
1/4 cup chopped onion
3/4 teaspoon dried basil
1/2 teaspoon dried oregano
1 round loaf of bread (1 pound)
Raw vegetables

In a large bowl, combine first six ingredients. Chill for at least 1 hour. Cut a 1-1/2-in. slice off the top of the loaf; set aside. Hollow out the bottom part, leaving a thick shell. Cut or tear the slice from the top of the loaf and the bread from inside into bite-size pieces. Fill the shell with dip; set on a large platter. Arrange the bread pieces and vegetables around it and serve immediately. Make 10 servings.