Creating Tinga de Pollo Tostadas can be a breeze if you follow these simple steps:

1. Cook Chicken: If not already cooked, boil chicken until tender. Remove from heat and shred.
2. Sauté Onions: In a large skillet, heat the vegetable oil over medium heat. Add the sliced onion and sauté until softened, about 3-4 minutes.
3. Add Garlic and Spices: Stir in the minced garlic, cumin, and oregano. Sauté for an additional minute until fragrant.
4. Prepare Sauce: Add the chopped tomatoes, minces chipotle peppers, salt, and pepper. Cook for about 5-7 minutes until the tomatoes break down and create a sauce.
5. Combine Chicken and Sauce: Stir in the shredded chicken, ensuring it is well-coated with the sauce. Cook for an additional 5 minutes to allow the flavors to meld.
6. Taste and Adjust: Taste the mixture and adjust seasoning if necessary.
7. Assemble Tostadas: Place crispy tostadas on a platter. Top each tostada generously with the Tinga de Pollo mixture.
8. Garnish: Finish with freshly chopped cilantro and, if desired, avocado slices or crumbled queso fresco.
9. Serve Warm: Ensure that the tostadas are served immediately while crispy.

These steps will lead you to create an unforgettable meal that everyone will love.