Preheat the oven to 350°F.
Lightly oil a 10 x 6 pan with olive oil.
Dice the onion into small pieces. In a small pan, heat about ½ Tbsp of olive oil over medium heat. Add the onions & cook until golden brown, about 5 minutes. Set aside.
Chop the parsley, set aside.
In large bowl, add the meat & begin to break it apart with a fork. Add the salt, garlic, & paprika, mix everything together.
Add all other ingredients, including the onions, & mix until well combined.
Place the mixture into your oiled pan & place in the oven.
Spread 2-3 Tbsp of ketchup on top of the meatloaf, then finish with cracked pepper, & flaky sea salt.
Bake 50 to 60 minutes or until the meatloaf has reached an internal temperature of 160°F.
IMPORTANT: Let stand for at least 30 minutes before slicing, this will help the meatloaf hold it's shape.
If desired, top with parsley & white sesame seeds.
Cover and refrigerate leftovers, ideally use within 2 days, or store it in the freezer for up to 3 months.