With a fork or small whisk, combine until they're all incorporated.
Store:
Transfer the Cajun seasoning inside a spice jar and keep in your spice cabinet or pantry for up to 6 months.
Notes
This recipe yields 3 tablespoons (total) of Cajun seasoning. If you don't use it a lot, it's the perfect amount. If it's a staple in your cooking, simply double the recipe and you'll get ⅓ cup.
The cayenne pepper is the ingredient that adds heat (spicy) to this mix. As it is, it's not as spicy as some of the ready-to-buy mixes. However, everyone tolerates spice levels differently so for a milder level of heat, use ½ teaspoon of cayenne, keeping the other ingredients the same.
You can use smoked paprika or sweet paprika (regular paprika). I don't recommend spicy paprika.
If you're out of Italian seasoning, substitute dried oregano.