Chicken and Mushroom Patties (Kotlety)

Bahan-bahan (18 porsi)

• 1 lb ground chicken (I ground my own chicken thighs; trimmed of extra fat)
• 1 lb button or cremini mushrooms (sliced)
• 1 small onion grated on the large holes
• 2 large eggs
• 1/2 cup Panko bread crumbs
• 2 Tbsp Olive oil for the mushrooms plus more to saute patties
• 1 1/2 tsp Salt and 1/2 tsp Pepper (or to taste)
• 1/2 cup flour for dredging the meatballs