Huevos Rancheros With Chipotle Black Bean Sauce And Avocado Salsa

Name: Huevos Rancheros With Chipotle Black Bean Sauce And Avocado Salsa
Ingredients: 1 small avocado, peeled, pitted, diced; 1/3 cup chopped fresh cilantro; 1/3 cup minced green onions; 1 1/2 tablespoons fresh lime juice; Nonstick vegetable oil spray; 4 5- to 6-inch-diameter corn tortillas; 4 teaspoons canola oil, divided; 1 cup finely chopped onion; 3 garlic cloves, minced; 2 1/2 teaspoons ground cumin; 1 28-ounce can diced tomatoes in juice; 1 15-ounce can black beans, drained; 2 teaspoons chopped canned chipotle chiles*; 4 large eggs; 1/2 cup grated Monterey Jack cheese or sharp cheddar cheese; 2 cups thinly sliced romaine lettuce