¼cupchicken brothor chicken stock, plus more if needed
1limehalved
8tostada shellswarmed if desired*
Suggested Toppings
Sliced avocados or guacamole
Shredded lettuce
Chopped red onion
Crumbled Mexican cheesesuch as cotija, Oaxaca, or queso fresco
Sour cream or crema
Fresh cilantro
Salsa
Instructions
Heat the oil in a large skillet over medium-high heat.
Add the onion and cook for 3 to 5 minutes, until soft.
Add the garlic, cumin, oregano, cinnamon, and ½ teaspoon salt and cook for 1 minute, until fragrant.
Transfer the mixture to a blender and add the diced tomatoes, chipotle chilies, adobo sauce, and ¼ cup of the chicken broth.
Puree until smooth.
Transfer the mixture back to the skillet, add the chicken, and set the pan over medium-high heat.
Bring to a simmer and cook for 10 minutes, adding more chicken broth if desired if the sauce looks dry. If necessary, reduce the heat to medium to keep the sauce at a simmer, not a rapid boil.
When the sauce has thickened, remove the pan from the heat and stir in the juice from half a lime.
Season the chicken mixture to taste with salt and pepper.
Cut the second half of lime into wedges or slices.
Spoon the chicken mixture onto the tostada shells and top with desired toppings.
Serve lime wedges/slices on the side.
*To warm the tostada shells, transfer them to a baking sheet, in a single layer, and warm in a 300-degree oven for 5 minutes.