30min · 3 servings Ingredients • 4 lb potatoes • 1 1/2 tbsp butter • 4 2/3 tbsp cornstarch • 1/2 onion • 1 clove garlic • 2.6 oz ground beef • 2/3 cup shredded mozzarella • Olive oil • Salt & pepper • Parsley For the full recipe, visit Chefclub TV!