Preheat oven to 350 degrees. Spray a round pie plate with nonstick cooking spray, and set aside for now.

Prepare the taco seasoning. Mix all the spices together in a small bowl and set aside.

Place a skillet over medium heat, and spray with just a little cooking spray. Add the ground beef, onion, and jalapeno. Cook, stirring and breaking meat apart every few minutes, until beef is browned. If needed, drain off excess fat (leave a little as it will help the spices blend with the meat).

Mix in the spice blend and cook for another 1-2 minutes, then pour the beef mixture into your prepared pie plate.

In a mixing bowl, whisk together the eggs and heavy cream. Slowly pour over the beef mixture so it sinks into the meat. Top casserole with cheese.

Place in the oven and bake for 30 to 35 minutes at 350 degrees, or until the casserole has set. Allow the dish to rest about 5 minutes before slicing.

Serve as-is, or with toppings like salsa, sour cream, guacamole, etc. Enjoy!