Brown the Beef: In a large skillet over medium-high heat, add the ground beef. Cook for 5–7 minutes, breaking it up with a wooden spoon or meat chopper as it browns, until fully cooked and no longer pink. Do not drain any grease.
1 pound 85-15 or 90-10 ground beef
Add Seasonings and Tomatoes: Reduce the heat to medium. Stir in the chili powder, cumin, smoked paprika, garlic powder, onion powder, salt, and the can of tomatoes and green chilies (with all the juices). Use the back of your spoon to gently break up some of the tomato chunks so they release even more flavor. Cook for 2–3 minutes, allowing the spices to bloom and everything to meld together.
1 Tablespoon EACH chili powder, , 1 teaspoon EACH garlic & onion powder, 1 teaspoon Morton kosher salt, 1 10- ounce can mild tomatoes and green chilies,
Thicken the Filling: Sprinkle the cornstarch evenly over the beef mixture and stir until fully incorporated. Pour in the water and stir again to combine. Simmer for 3–4 minutes, or until the liquid thickens into a rich, saucy taco filling. Assemble tacos as desired.
1 Tablespoon cornstarch, 2/3 cup water, 8 flour tortillas,