01 - Preheat oven to 375°F.
02 - Heat olive oil in a large skillet over medium heat. Add diced onion and cook until softened, about 3 minutes.
03 - Stir in minced garlic and cook for 1 minute. Add ground beef, breaking it apart as it browns completely.
04 - Incorporate cumin, chili powder, smoked paprika, oregano, salt, and black pepper. Cook for 2 minutes until spices become fragrant.
05 - Add tomato sauce, reduce heat to low, and simmer for 5 minutes. Remove from heat.
06 - Wrap tortillas in a damp paper towel and microwave for 30 seconds or lightly warm in a skillet.
07 - Spread 1/2 cup enchilada sauce evenly on the bottom of a 9x13-inch baking dish.
08 - Place 2–3 tablespoons of the beef filling onto each tortilla, sprinkle a little cheese, and roll tightly.
09 - Set rolled tortillas seam-side down in the baking dish.
10 - Pour remaining enchilada sauce over the tortillas. Sprinkle with remaining cheddar and Monterey Jack cheese.
11 - Bake for 20 to 25 minutes until cheese is melted and bubbly.
12 - Allow enchiladas to rest for 5 minutes before serving. Garnish with cilantro, sour cream, avocado, and diced red onion as desired.