Heat 1 tablespoon olive oil in a 10-inch non-stick skillet over medium heat. Add the diced white onion and cook for 2 minutes, stirring occasionally, until softened and translucent. Add the chopped green and red bell peppers.
Cook the vegetables for 5 minutes, stirring occasionally, until they begin to soften. Add the ground turkey to the same pan and break it up with a wooden spoon into small crumbles. Cook for 5–7 minutes until the turkey is no longer pink and reaches an internal temperature of 165°F / 74°C.
Once the turkey is fully cooked, carefully tilt the pan and use a spoon to remove any excess grease. Alternatively, drain the mixture through a colander set in the sink and return it to the pan.
Reduce the heat to low. Sprinkle the taco seasoning evenly over the turkey and vegetable mixture, then pour in ½ cup (120ml) of water. Stir well to combine and coat everything in the seasoning.
Let the mixture simmer uncovered for 5 minutes, stirring occasionally, until the liquid has reduced to a thick, glossy sauce that coats the meat. While the filling simmers, warm the corn tortillas in a dry skillet for 30 seconds per side. Spoon the turkey filling into the warm tortillas, add your favourite toppings, and serve immediately.
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Notes
Storage: Refrigerate cooked taco meat in an airtight container for up to 4 days. Reheat gently in a skillet with a splash of water to keep it moist.
Freezer-friendly: Freeze the cooked turkey filling in a zip-lock bag for up to 3 months. Thaw overnight in the fridge before reheating.
Make-ahead: Prep and chop all vegetables the night before and store in the fridge. The filling can be cooked up to 2 days ahead and reheated.
Substitutions: Swap ground turkey for lean ground beef, ground chicken, or crumbled firm tofu for a vegetarian version. Use dairy-free shredded cheese and coconut yogurt to make these dairy-free.
Pro tip: Warm your corn tortillas in a dry skillet for 30 seconds per side until pliable — this prevents cracking and brings out their natural corn flavour.