Baked Potatoes in Foil | with onion soup mix

3 Ingredient Onion Baked Potatoes in Foil

These 3 Ingredient Onion Baked Potatoes in Foil are easy to make and unbelievably delicious! Adding the onion/butter mixture between the slices and baking in aluminum foil locks in the rich flavor, adding real pizzazz to your potatoes! They are perfect in the oven or on the grill.
Course Side Dish
Cuisine American, Canadian, North American
Keyword baked potatoes, baked potatoes in foil, onion potatoes
Prep Time 10 minutes
Cook Time 45 minutes
Total Time 55 minutes
Servings 6 people
Calories 304kcal
Author Terri Gilson


  • 6 medium potatoes
  • 1 -1 ounce - pkg onion soup mix 28 g (approximately)
  • 2/3 cup margarine or butter * I use Becel olive oil margarine


  • Preheat oven to 400 degrees F. 
  • Mix margarine (or butter) and onion soup mix together. 
  • Using a sharp knife, make crosswise cuts in each potato about a 1/2 inch apart, (you want to make about 4 -5 cuts in each potato) stopping about 1/4 inch from the bottom of the potato. *Do NOT cut right through. 
  • With a butter knife, add a dab of the margarine (or butter) onion soup mixture between each slice, dividing evenly between all slices in all potatoes.
  • Wrap each potato in aluminum foil (shiny side in) and place on a cookie sheet, as they may leak a little.
  • Bake in oven for 40- 45 minutes or until fork easily goes through the potato.
    Grill/BBQ method: Follow the above directions, but bake on med-high grill/BBQ (with lid down) for 30-40 minutes until fork easily goes through the potato.


Nutrition Facts
3 Ingredient Onion Baked Potatoes in Foil
Amount Per Serving
Calories 304 Calories from Fat 180
% Daily Value*
Fat 20g31%
Saturated Fat 13g81%
Cholesterol 54mg18%
Sodium 214mg9%
Potassium 885mg25%
Carbohydrates 26g9%
Fiber 5g21%
Protein 5g10%
Vitamin A 630IU13%
Vitamin C 24.3mg29%
Calcium 70mg7%
Iron 6.9mg38%
* Percent Daily Values are based on a 2000 calorie diet.
*Note: these are lower fat than indicated in the nutrition label, as some of the butter/margarine does melt off


Calories: 304kcal | Carbohydrates: 26g | Protein: 5g | Fat: 20g | Saturated Fat: 13g | Cholesterol: 54mg | Sodium: 214mg | Potassium: 885mg | Fiber: 5g | Vitamin A: 630IU | Vitamin C: 24.3mg | Calcium: 70mg | Iron: 6.9mg