Finely chop the yellow onion and garlic. Dice the tomatoes and thinly slice the red onion.
Heat the olive oil in a skillet over medium heat. Add the chopped onion and sauté for 2-3 minutes until softened and translucent.
Add the ground beef to the skillet and cook over medium heat, breaking it up with a spoon, until fully cooked and lightly browned, about 6-7 minutes.
Stir in the garlic, tomato paste, ground cumin, smoked paprika, chili powder, salt, and black pepper. Cook for another 5 minutes to allow the flavors to meld.
Warm the refried beans in a small saucepan over low heat until creamy and heated through.
Meanwhile, shred the iceberg lettuce and chop the fresh cilantro.
Preheat the hard taco shells in an oven at 350°F (180°C) for 5 minutes to make them extra crispy.
Warm the flour tortillas in a dry skillet or oven until pliable.
Spread the warmed flour tortillas with a thin layer of refried beans. This will act as "glue" to hold the hard shell in place. Place a hard taco shell on top of each tortilla.
Fill the hard taco shells with the seasoned ground beef, then top with shredded lettuce, diced tomatoes, and sliced red onion.
Sprinkle with shredded cheddar cheese and drizzle with sour cream for added creaminess.
Squeeze a bit of fresh lime juice over the tacos for extra freshness, and garnish with fresh cilantro.
Serve the Double Decker Tacos immediately and enjoy this flavorful and satisfying Mexican treat!
To provide the best experiences, we and our partners use technologies like cookies to store and/or access device information. Consenting to these technologies will allow us and our partners to process personal data such as browsing behavior or unique IDs on this site and show (non-) personalized ads. Not consenting or withdrawing consent, may adversely affect certain features and functions.
Click below to consent to the above or make granular choices. Your choices will be applied to this site only. You can change your settings at any time, including withdrawing your consent, by using the toggles on the Cookie Policy, or by clicking on the manage consent button at the bottom of the screen.