Prepare the Filling:

Heat a skillet over medium heat and cook the ground beef, breaking it into crumbles, until browned.
Drain any excess grease.
Add the refried beans, taco seasoning, and 1/2 can of tomato sauce. Stir to combine and let it simmer for 2-3 minutes to thicken.
 Assemble the Tacos:

Preheat your oven to 375°F (190°C).
Arrange the taco shells standing upright in a casserole dish. (You can use crumpled aluminum foil or an oven-safe taco rack to keep them upright if needed.)
Spoon the beef and bean mixture evenly into the taco shells.
 Add Cheese and Bake:

Sprinkle a generous amount of shredded cheese over the filling in each taco.
Bake in the preheated oven for 10 minutes, or until the cheese is melted and the shells are slightly crisp.
 Serve and Enjoy:

Remove from the oven and let the tacos cool for 2-3 minutes.
Serve with your favorite toppings like shredded lettuce, diced tomatoes, sour cream, guacamole, or salsa.
Tips for Success:
Prevent Soggy Shells: To keep the shells extra crispy, bake them empty for 3-4 minutes before filling.
Custom Fillings: Swap ground beef for ground turkey, chicken, or even black beans for a vegetarian version.
Add Heat: Mix in diced jalapeños or a splash of hot sauce to the filling for a spicy kick.
Enjoy these easy and cheesy oven-baked tacos that are sure to be a hit at your table!