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Serving of Costco Lasagna on a white plate with rest of tray in background.

How to cook Costco Lasagna

Anne Aslanides
Freezer lasagna is one of those classic frozen foods that saves you a lot of time in the kitchen, and Costco's version is a flavorful choice. The best way to make it is in the oven, but you can cook it in the microwave as well.
4.86 from 7 votes
Prep Time 2 minutes
Cook Time 1 hour 5 minutes
Resting time 10 minutes
Total Time 1 hour 17 minutes
Course Main Course
Cuisine Italian
Servings 6
Calories 410 kcal

Ingredients
  

  • 1 tray Kirkland Signature Italian Sausage & Beef Lasagna 3 lb

Instructions
 

Traditional Oven Instructions

  • Preheat oven to 375 and remove outer shrink wrap and cardboard sleeve.
  • Place one tray lasagna on a baking sheet and vent a 2" slit in the middle of the film. Bake on middle oven rack for 55 minutes.
  • Carefully remove plastic film cover and return to the oven for an additional 10 minutes. Rest 10 minutes before serving.

Microwave Instructions

  • Remove outer shrink wrap and cardboard sleeve and vent a 2" slit in the middle of the film.
  • Place in microwave and cook on high for 10 minutes.
  • Carefully remove plastic film cover and reduce microwave power to 50%, then cook an additional 14 minutes. Rest 10 minutes before serving.

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Notes

Convection or air fryer ovens will cook approximately 20 mintues faster.

Nutrition

Serving: 226gCalories: 410kcalCarbohydrates: 30gProtein: 23gFat: 22gSaturated Fat: 10gCholesterol: 80mgSodium: 890mgPotassium: 584mgFiber: 3gSugar: 7gCalcium: 254mgIron: 2mg

Nutrition information is provided as a courtesy and is an estimate. It is recommended to use your preferred calculator with the actual ingredients you use for optimal accuracy.

Keyword Frozen
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