Preheat the oven to 375°F (190°C). Line a baking sheet with parchment paper.
In a large mixing bowl, combine ground beef, ground pork, ricotta, egg, Parmesan, breadcrumbs, parsley, garlic, oregano, salt, and pepper. Mix gently until just combined; do not overwork.
Shape the mixture into 1.5-inch (4 cm) meatballs, about 24 total. Place on the prepared baking sheet.
Drizzle olive oil over the meatballs and bake in the preheated oven for 20–25 minutes, or until internal temperature reaches 160°F (71°C).
Optional: Transfer cooked meatballs to a simmering sauce of your choice and heat through before serving.
Notes
Serve with marinara sauce and pasta for a complete meal.