Preheat the oven. Set to 400°F (200°C). Line a sheet pan with parchment paper or foil for easy cleanup.
Mix the wet and dry binders. In a large bowl, whisk the eggs, heavy cream, Parmesan, almond flour, salt, pepper, oregano, red pepper flakes, and garlic until combined.
This helps distribute seasoning evenly.
Add the meats and herbs. Add ground beef, ground pork, and parsley. Gently mix with your hands or a fork until just combined. Do not overmix or the meatballs can turn dense.
Shape the meatballs. Scoop about 2 tablespoons per meatball (golf-ball size). You should get roughly 22–26 meatballs.
Lightly oil your hands to prevent sticking.
Choose your cooking method. Baked: Arrange meatballs on the sheet pan. Bake 15–18 minutes, until browned and cooked through (internal temp 160°F/71°C).
Pan-seared + simmered: Heat olive oil in a large skillet over medium-high. Sear meatballs 2–3 minutes per side until browned.
Add marinara, reduce heat, cover, and simmer 10–12 minutes until cooked through.
Warm in sauce. If baking, transfer cooked meatballs to a pot with the marinara and simmer 5 minutes to meld flavors. Taste and adjust salt as needed.
Serve. Garnish with extra Parmesan and parsley. Pair with zucchini noodles, steamed broccoli, or a crisp salad.