HEAT oven to 350ºF.
SET a large saute pan over medium heat, and add pepperoni cubes and onion. Cook for 3-4 min. until pepperoni begins to render oil, then add garlic, pepper flakes and fennel seeds. Cook until fragrant, about 2 min.; drain oil and add tomatoes and bay leaf. Simmer for 10-12 min. until thickened and all the flavors have come together in the sauce. Set aside and keep warm. Discard bay leaf.
IN a large mixing bowl, combine ricotta and Parmesan; smear a teaspoon of Parmesan-ricotta mixture on each RITZ Cracker and top with a teaspoon of pepperoni sauce. Place on a cookie sheet and bake for 5-6 min. or until heated through. Garnish with parsley.
