Karo No-Cook Marshmallow Frosting

Prep: 10 min Cuisine: American

Light and fluffy marshmallow frosting with a hint of vanilla, perfect for cakes and cupcakes, appealing to those who prefer a less sweet, no-cook topping.

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Ingredients

  • 2 egg whites
  • 1/4 tsp salt
  • 1/4 cup sugar
  • 3/4 cup light Karo syrup
  • 1 1/4 tsp vanilla

Instructions

  1. Beat together the egg whites, salt, and sugar until foamy.
  2. Add Karo syrup and beat until it holds stiff peaks.
  3. Add vanilla and beat just until mixed in.

Tips & Substitutions

For best results, use room temperature egg whites, as they whip up better. If you need a dairy-free alternative, consider using aquafaba (chickpea brine) instead of egg whites. Adjust the sugar to taste if you prefer a less sweet frosting. This frosting can be used not just on cakes but also as a topping for Green Beans And Walnuts for a unique twist.

Serving Suggestions

This fluffy marshmallow frosting is perfect for frosting cakes, cupcakes, or even as a filling for pastries. It pairs beautifully with Helen'S Snickerdoodles Cookies for a delightful dessert experience. Consider adding sprinkles or chocolate shavings on top for an extra touch when serving.

Storage & Reheating

Store any leftover frosting in an airtight container in the refrigerator for up to 3 days. When ready to use, let it come to room temperature and re-whip it briefly to restore its texture. Avoid freezing, as the frosting may separate when thawed.

Nutrition & Diet Analysis (per serving)

Each serving of Karo No-Cook Marshmallow Frosting contains roughly 101 calories, with 12g protein, 3g carbohydrates, and 0g fat. It is an excellent source of protein (24% of the Daily Value). Note that it is relatively high in sodium, at 799mg per serving (35% of the Daily Value).

101 kcal 5% DV
Protein Fat Carbs

Macronutrients

Protein 12.2g 24% DV
Total Fat 0g
Carbs 3.1g 1% DV
Fiber 0g
Sugar 2.7g 5% DV

Electrolytes

Sodium 799mg 35% DV
Potassium 191.9mg 4% DV

Vitamins & Minerals

Vitamin C 0.1mg
Calcium 11.4mg 1% DV
Iron 0.1mg
Diet fit High-protein Keto-friendly Under 400 cal Low-fat
Contains Egg

Estimated from ingredients & per-serving nutrition — verify against package labels for allergies or strict diets.

* % Daily Values based on a 2,000 calorie diet (FDA 2020).

Frequently Asked Questions

Can I make this frosting ahead of time?

Yes, you can prepare the frosting in advance and store it in the refrigerator. Just make sure to re-whip it before using to restore its fluffy texture. It's best used within three days for optimal freshness.

What can I use instead of Karo syrup?

If you don't have Karo syrup, you can substitute it with light corn syrup or a homemade simple syrup made from equal parts sugar and water. Keep in mind that this might slightly alter the flavor and texture.

Is this frosting safe to eat raw?

This frosting contains raw egg whites, so it's important to use pasteurized eggs to reduce the risk of salmonella. If you're concerned about raw eggs, consider using a powdered egg white substitute or aquafaba as a safer alternative.

Nutrition is estimated from USDA FoodData Central ingredient data and may vary with brand, portion and preparation — see our methodology. This information is for general educational purposes only and is not medical or dietary advice (disclaimer).

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