Thaw ground venison in a paper towel-lined bowl in the fridge to remove excess moisture. This will help the meatballs stick together.
Preheat oven to 350°F. Grease a 9x13 baking pan with butter.
Melt 1 tablespoon of butter in a medium skillet. Add rice. Stir to coat and cook for 4-5 minutes, or until the rice is golden brown and fragrant, stirring frequently. Transfer the rice to a medium bowl to cool while you prep the remaining ingredients.
To the medium bowl with the rice, add the remaining meatball ingredients.
Gently combine the meatball ingredients with your hands.
Using a cookie scoop, portion the meatball mixture into 18 even balls.
Gently roll each meatball with your hands until it is a more uniform ball. Place the meatballs in the greased pan, evenly spaced.
Combine all sauce ingredients (except fresh parsley) in a medium bowl. Pour the sauce over the meatballs in the pan.
Tightly cover the pan with aluminum foil. Bake for 45 minutes to 1 hour, or until the internal temperature of the meatballs reaches 165°F and the sauce is bubbly and fragrant.
Serve meatballs on their own or over rice or mashed potatoes. Garnish with fresh parsley. Enjoy!
Notes
Ground venison can be replaced with any ground meat of your choosing. A lot of venison meatball recipes call for ground pork but these meatballs are so tender and flavorful, you don't need the extra moisture from pork fat!
Long-grain white rice is an essential ingredient for porcupine meatballs. Rice acts as the starch that helps hold the meatballs together, like bread crumbs in regular venison meatballs. You can use other types of rice but you will likely need to adjust the cooking time depending on the type of rice used.
Most porcupine meatball recipes call for tomato sauce which is essentially tomato puree with a few seasonings. I like to start with a clean slate with pure tomato puree and add my own seasonings. If you choose to use tomato sauce, you may need to adjust the seasonings to your liking.
Don’t overmix the meat mixture. Gently combine the ingredients to avoid making the meatballs too dense. This keeps them light, tender, and juicy while allowing the rice to puff up and create that classic “porcupine” texture!