Tortilla Bites

4 (8-inch) flour tortillas, cut into quarters
1 medium onion, grated
1 (16 ounce) can black beans, drained
1 (8 ounce) jar chunky salsa
 sour cream (optional)
Chopped fresh cilantro (optional)

Heat the oven to 350 degrees F.

Spray 16 muffin cups with nonstick cooking spray. Fit 1 tortilla quarter in each muffin cup. Layer the onion, black beans and salsa in the prepared muffin cups. Bake for 8 to 10 minutes or until heated through. Garnish with sour cream and cilantro. Serve immediately. Yield: 16 servings