Ingredients

• 1 medium yellow onion, diced
• 1.5 lb ground beef
• 1 tsp kosher salt
• 1/2 tsp black pepper
• 2 tbsp taco seasoning (or 1 packet)
• 1 can (15 oz) crushed tomatoes
• 1 can water (use empty tomato can)
• 8 large flour tortillas
• 3 cups shredded mozzarella cheese
• 1 cup pizza sauce
• 32 pepperoni slices (about 4 per taco)
• 4 cups mixed greens (optional, for serving)
• 1/2 cup ranch dressing (optional, for serving)
• 1 cup crispy tortilla strips (optional, for serving)

Steps

1. Preheat the oven to 375°F (190°C).
2. Make the taco meat: Sauté {{yellow onion, diced:1 medium}} in a large skillet over medium heat until softened, 3–4 minutes. Add {{ground beef:1.5 lb}} and cook, breaking it up, until browned.
3. Season and simmer: Stir in {{kosher salt:1 tsp}}, {{black pepper:1/2 tsp}}, and {{taco seasoning:2 tbsp}}. Add {{crushed tomatoes (can):1 can (15 oz)}} and {{water:1 can}}; bring to a simmer and cook 5–10 minutes, stirring occasionally.
4. Prep the shells: Trim the tops and bottoms off {{flour tortillas:8 large}} to create long taco shapes.
5. Fill and arrange: Spoon the taco meat into the tortillas and stand them snugly in a baking dish so they support each other.
6. Top with cheese: Sprinkle each taco with {{shredded mozzarella cheese:3 cups}}.
7. Add sauce: Drizzle {{pizza sauce:1 cup}} evenly over the cheese.
8. Pepperoni time: Place {{pepperoni slices:32 slices}} on top (about 4 slices per taco) for full coverage.
9. Bake: Transfer to the oven and bake at 375°F for about 30 minutes, until the cheese is melted and the edges are lightly crisp.
10. Serve: Plate with {{mixed greens (optional):4 cups}}, drizzle {{ranch dressing (optional):1/2 cup}}, and add {{crispy tortilla strips (optional):1 cup}} if desired.