Sprinkle strips of sirloin with garlic powder to taste. In a large skillet over medium heat, heat the vegetable oil and brown the seasoned beef strips. Transfer to a slow cooker.
Mix bouillon cube with hot water until dissolved, then mix in cornstarch until dissolved. Pour into the slow cooker with meat. Stir in onion, green peppers, stewed tomatoes, soy sauce, sugar, and salt.
Cover and cook on High for 3 to 4 hours or on Low for 6 to 8 hours.
All posted nutrition information is approximate and has been calculated using the nutrition calculator on myfitnesspal.com. Skinny Points makes no guarantees of accuracy and use of different brands may change the nutrition information.
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