Mix all the spices together (adding the red pepper flakes if you want things extra spicy).
Keep in an airtight jar – a baby mason jar works great for this!
Notes
Red Pepper Flakes: These are optional, and for when you want your taco seasoning on the spicier side. 🔥
Spices: All of these spices can be found in the baking or spice aisle of your supermarket. If you are using spices you already have, make sure they are still potent…spices usually are okay for 2 to 3 years. Give them a sniff or a small taste if you are not sure.