Add 1 cup nutritional yeast, 2 Tbsp onion powder, 2 Tbsp garlic powder, 2 Tbsp dried oregano, 2 Tbsp dried basil, 2 Tbsp dried rosemary, 1 Tbsp salt, 1 Tbsp ground black pepper to a high speed blender or food processor.
Blend until the spices turn into a fine powder or until your desired texture (I like mine to have a little bit of chunkier pieces left). Pour into a mason jar and seal tightly with a lid. Give the spice mix a quick shake before using in any of your recipes.