Cheesy Guacamole Tostada

Ingredients (9)

• 4 flour tortillas or corn tortillas
• 1 cup shredded cheddar cheese
• 2 ripe avocados
• 1-2 tablespoons fresh lime juice
• 1/4 cup minced red onion
• 1/4 cup finely chopped cilantro leaves
• 1/2 ripe tomato
• Kosher salt and freshly ground black pepper
• Additional shredded cheese