Mix the Cajun spices in a large bowl with the oil until everything is united.
Add the frozen broccoli and stir well until all the broccoli is nicely coated with oil and spices.
Arrange the coated broccoli in a heat resistant pan.
Cover with aluminum foil and place in oven at 350F for half an hour.
After half an hour, remove the foil and return to the oven for fifteen minutes.
Ready!