Slow Cooker Mongolian Beef

Top view of cooking ingredients on a wooden surface: chunks of raw beef in a glass bowl, small bowls of dark sauce, light brown powder, and minced garlic, a measuring cup with brown sugar, and a bottle of yellow cooking oil.

Top view of cooking ingredients on a wooden surface: chunks of raw beef in a glass bowl, small bowls of dark sauce, light brown powder, and minced garlic, a measuring cup with brown sugar, and a bottle of yellow cooking oil.