Creating delicious Ground Beef Tostadas involves simple steps that are easy to follow. Here’s how to make them:

1. Cook the Beef: In a large skillet, heat olive oil over medium heat. Add diced onion, cooking until soft, about 3 minutes.
2. Add Garlic: Stir in minced garlic and cook for an additional minute until fragrant.
3. Brown the Beef: Add ground beef to the skillet, breaking it apart with a spatula. Cook until browned, approximately 5-7 minutes.
4. Season the Beef: Once the beef is cooked through, stir in chili powder, cumin, and paprika. Mix until evenly coated and heated, about 2 minutes.
5. Prepare Tostada Shells: While the beef cooks, place tostada shells onto a baking sheet. If desired, lightly toast them in the oven at 350°F (175°C) for 5-7 minutes.
6. Layer the Tostadas: On each tostada shell, heap a generous amount of the seasoned ground beef mixture.
7. Add Toppings: Finish with shredded lettuce, diced tomatoes, a dollop of sour cream, and sliced avocado.
8. Garnish: If you like, sprinkle your tostadas with cheese, cilantro, or jalapeños for an extra kick.
9. Serve Immediately: These tostadas are best enjoyed fresh and crispy, so serve right away.