I would invest the first 500k into stocks of companies known to have great returns (and set it up to put half of the earnings back into stocks, and the other half into a direct deposit quarterly), and then spend the other 500k into a brand new house with space and everything I need.
Sounds boring lol. Get an underground bunker...that way if there is a nuclear strike, you will survive and you can rebuild the world in your image lmao.
I'd eliminate my debt first off. Then I'd take the maximum I'm allowed to and put it into my tax free savings account (which, offhand is only like 5,000). Then I'd dump a solid chunk into a retirement plan (maybe like 200,000 if I can, not sure what the rules are on that). After that I'd likely buy a nice house (~300,000). I'd probably take 2000 and fix up my vehicles really well.
After that the remainder is going into an offshore account so the government can't tax me on it as income the following year.
I'd probably start a software company that focuses on Education, Business and Utility software. Buy a house and a car. Maybe a dog and anything left, I'd put into the bank