1 cup finely crushed thin wheat crackers
3 tablespoons butter, melted
12 ounces reduced-fat cream cheese
2 (8 ounce) containers reduced-fat plain yogurt
1 egg
1 egg yolk
1/4 teaspoon dried basil
1/8 teaspoon dried rosemary, crushed
2 cups shredded reduced-fat Swiss cheese
Assorted crackers