Preheat oven to 425°F.
Line two baking sheets with parchment paper. Spray lightly with cooking spray and set aside.
Add all meatball ingredients to large mixing bowl. Using your hands, gently mix together ingredients until uniformly combined.
2 large eggs, 1 medium onion, 2 lbs lean beef, 6 cloves garlic, 1/2 tsp salt, 1/2 tbsp garlic powder, 1/2 tbsp onion powder, 1 tsp black pepper, 1 tsp oregano, 1/4 tsp cinnamon, 1/4 tsp cumin, 8 oz feta cheese
Shape mixture into 1 1/2-inch balls (you’ll make roughly 32 balls) and place spaced apart on one of the large baking sheets.
In a medium mixing bowl, combine halved potatoes with olive oil, salt, pepper, onion powder, & garlic powder. Stir until well-combined, then spread in an even layer on your second baking sheet.
1.5 pounds golden potatoes, 1 tbsp olive oil, 1/4 tsp salt, 1 tsp pepper, 1/2 tbsp onion powder, 1/2 tbsp garlic powder
Place baking sheets in preheated oven. Bake 15-20 minutes or until meatballs are nicely browned and cooked through at 165°F & the potatoes are fork tender. Prepare tzatziki & cucumber salad while meatballs & potatoes bake.