2 pounds (908 g) ground meat ½ medium onion, finely chopped 1½ tsp (4.5 g) sea salt 1 tsp (3 g) ground cumin 2 cups (140 g) packed baby spinach, chopped ½ cup (30 g) fresh cilantro, finely chopped 2 eggs, whipped
Preheat the oven to 400°F (200°C, or gas mark 6). Line a baking sheet with parchment paper. Combine all ingredients in a large bowl and mix well until fully combined. Roll into small balls and place onto prepared baking sheet. Bake for 25 minutes, until meatballs are beginning to brown and are cooked all the way through. Freeze meatballs in a single layer then place frozen meatballs in an airtight container.