These easy oven-baked soft tacos are crispy at the edges, cheesy in the middle, and loaded with a quick beef-and-bean filling. Perfect for a weeknight dinner and ready in about 35 minutes.
Preheat oven to 425°F. Line a large rimmed baking sheet with parchment paper or lightly oil it.
Cook the beef and onion in a large skillet over medium-high heat, breaking up meat, until browned and onions are soft, 6 to 8 minutes. Drain excess fat.
Stir in garlic, taco seasoning, tomato sauce, salt, and pepper. Cook 2 minutes, then fold in black beans and corn. Remove from heat.
Warm tortillas in the microwave for 30 to 45 seconds or in a foil packet in the oven so they are pliable.
Assemble tacos: Spoon about 0.25 cup of the beef filling onto half of each tortilla, sprinkle with cheese, then fold over to close.
Arrange tacos on the baking sheet. Brush tops with oil and lightly sprinkle with a pinch of salt.
Bake 8 to 10 minutes, flip, then bake 5 to 7 minutes more until golden and crisp at the edges. For extra color, broil 1 to 2 minutes if desired.
Serve hot with sour cream, cilantro, and diced tomatoes.
Notes
Make-ahead tip: The filling can be prepared up to 2 days in advance and refrigerated. Reheat before assembling. Swap ground turkey or chicken for the beef if you like. For gluten-free, use 6-inch corn tortillas and warm them well before filling.