Paleo Meatballs

1lb. grass fed ground beef
1 egg
salt and pepper to taste (about 1/2tsp salt and 1/4tsp pepper)
1/2 small onion, minced
1Tbsp spinach (optional)
1Tbsp fresh parsley (optional)
Preheat oven to 375degrees.
In a large bowl, scramble egg and combine remaining ingredients. Mix thoroughly. Take an ice-cream scoop and measure out equal portions onto a baking sheet lined with parchment paper or tin foil. Bake for 10 minutes and then flip the meatballs to the other side and bake another 10 minutes. Total cook time is 20 minutes.
*Tip* Can be made ahead and refrigerated or frozen. If refrigerating, go by sell-date on package. If freezing, place on parchment lined baking sheet and freeze separately for one hour then move to freezer bag. When ready to use, bake additional 5-10 minutes.