pinwheel recipe

1 package (8 oz) cream cheese, softened 1/2 cup sour cream 1 cup shredded cheddar cheese 1/2 cup finely chopped green onions 1/4 cup finely chopped red bell pepper 1/4 cup finely chopped black olives (optional) 1/4 cup chopped fresh cilantro or parsley 1 teaspoon garlic powder Salt and pepper, to taste