Crazy Good French Onion Noodle Casserole
Craving cozy comfort food? This crazy good French onion noodle casserole is rich, creamy, and packed with all the savory flavor of classic French onion soup. This 6-ingredient recipe is ready to eat in 30 minutes, and is delicious enough to steal the show at any gathering!
Servings: 6 servings
Cost: $0.72 per serving
Equipment
- 9x13-inch casserole dish
Ingredients
- 16 ounces fresh egg noodles or dried
- 8 ounces sour cream or low fat or Greek yogurt
- 1 envelope onion soup mix or 1/4 cup homemade onion soup mix
- ½ cup unsalted butter melted and cooled slightly; plus more for greasing the baking dish
- ½ cup fresh parsley chopped
- 1½ cups crispy French fried onions
Instructions
Cook the Noodles
- Grease the bottom and sides of a 9x13-inch baking dish with cooking spray or butter. (I prefer to use 2 teaspoons of softened butter.)
- Bring a large pot of water to a boil. Once at a full rolling boil, add a pinch of sea salt if desired. Boil the noodles according to package directions, except undercook the noodles by 1 to 2 minutes. Reserve ¾ cup of the boiling liquid before draining.
- Turn the noodles into a colander to drain. After the noodles are well-drained, return them to the empty pot and set aside.
Make the French Onion Mixture
- While the noodles are boiling, whisk the sour cream, dry onion soup mix, melted and cooled butter, parsley, and ¾ cup of the crispy fried onions together in a large bowl until incorporated.
- Whisk ¼-½ cup of the pasta liquid into the French onion mixture. This liquid will be absorbed by the noodles during the bake, so you want the sour cream mixture to be thin but not too thin. I rarely use the full ¾ cup that I reserve, but you can't 'go back' once the pasta is drained, so better to take more than you think you will need.
Assemble & Bake Casserole
- Pour the French onion mixture over the hot noodles and stir gently to combine and coat well. Spread in the prepared casserole dish then top with another ½ cup of the crispy fried onions. Reserve the final ¼ cup of onions for the last 5 minutes of the bake.
- Cover the casserole tightly with the aluminum foil. Bake at 350°F for 15 minutes, then uncover and top with the remaining ¼ cup of crispy fried onions. Bake uncovered for 5 minutes more to brown the top. Serve warm and enjoy!
Video
Notes
- Make Ahead: The casserole may be assembled, covered with foil, and refrigerated until ready to bake.
- Leftovers: Baked leftovers should be transferred to an airtight container and may be refrigerated up to 3 days. Baked leftovers may also be transferred to an airtight, freezer-safe container and frozen up to 3 months.
Nutrition
Serving: 1serving | Calories: 610kcal | Carbohydrates: 66g | Protein: 12g | Fat: 33g | Saturated Fat: 17g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 7g | Trans Fat: 1g | Cholesterol: 126mg | Sodium: 684mg | Potassium: 312mg | Fiber: 3g | Sugar: 3g | Vitamin A: 1177IU | Vitamin C: 7mg | Calcium: 86mg | Iron: 2mg