Heat vegetable oil in a Dutch oven over medium heat for 5 minutes.
Meanwhile, season the cubed beef with 2 teaspoons of the Spicy Seasoning Mix.
Add the seasoned beef and chopped onion to the Dutch oven.
Stir-fry for 2 to 3 minutes until the beef is browned and the onion is softened.
Season with salt, if desired.
Add the canned tomatoes (breaking them up with the back of a spoon), frozen corn, and remaining 2 1/2 teaspoons of Spicy Seasoning Mix to the Dutch oven.
Bring the mixture to a boil, then reduce the heat to medium-low and simmer, uncovered, for 18 to 20 minutes.
Serve hot.
Notes / Tips / Wine Advice:
Pair this hearty beef and corn chili with a medium-bodied red wine such as a Merlot or a Zinfandel. Their fruity and slightly spicy notes will complement the chili's flavors without overpowering them.