Preheat oven to 350°F (175°C). Grease a 9x13-inch baking dish and spread a thin layer of enchilada sauce on the bottom.
In a skillet over medium heat, cook ground beef until browned. Add diced onion and minced garlic, cooking until softened.
Stir in Old El Paso Taco Seasoning Mix and ¼ cup water. Simmer until the liquid reduces and the mixture thickens.
Heat corn tortillas briefly in a skillet or microwave to make them pliable.
Fill each tortilla with 2-3 tablespoons of beef mixture, roll tightly, and place seam-side down in the baking dish.
Pour remaining enchilada sauce over the rolled tortillas, ensuring they are fully coated. Sprinkle shredded cheese on top.
Bake for 25-30 minutes, or until the cheese is melted and bubbly. Let rest for 5-10 minutes before serving.
Garnish with optional toppings like sour cream, cilantro, jalapeños, or avocado. Serve warm.