In a large bowl, combine the ground venison, ground pork, breadcrumbs, Montreal steak seasoning, yellow onion, eggs, and heavy whipping cream and mix lightly with a fork.
Lightly press ½ of the meat mixture into the loaf pan.
Spread the grated Irish Cheddar cheese in the middle of the meat mixture, leaving 1-inch around the edges.
Add the remaining meat mixture and gently close the gaps, pressing the sides to seal in the cheese.
Bake at 350 degrees F for 45 minutes until the internal temperature reaches 160 degrees.
Remove from oven and let rest for 10 minutes before slicing and serving
Coleslaw & Creamed Spinach
While the meatloaf is resting, add the butter to a large skillet over medium-high heat.
Add the coleslaw and cook for 5 minutes, stirring often.
Add the spinach or kale and cook for another 2 minutes.
Add the apple cider vinegar, salt, pepper, and curry powder and cook for another 1 minute.
Add the heavy whipping cream, stir together, and remove from heat.
When ready to serve, place a couple of slices of the Irish meatloaf over some mashed potatoes and spoon some of the coleslaw and creamed spinach over it.