Make Ahead Green Bean Casserole Recipe
This easy Make Ahead Green Bean Casserole can be baked from frozen, and taken out the day of! With a sauce made from scratch with no canned soup- this fresh to frozen casserole is a great way to make a classic favorite ahead of time!
Prep Time10 minutes mins
Cook Time1 hour hr 30 minutes mins
Cooking without freezing45 minutes mins
Course: Dinner, Side Dish
Keyword: casserole, green bean, thanksgiving
Servings: 8
- 1 lb frozen (or fresh) petite green beans trim ends, if fresh
- 2 tablespoon butter
- 1 medium Onion, diced
- salt and pepper, to taste
- 8 oz fresh button mushrooms, sliced thinly
- 2 cloves minced garlic
- 2 tablespoon all-purpose Flour
- 1 14.5 oz can chicken broth
- ½ cup half and half
- 1 teaspoon Worcestershire sauce
- 2 teaspoon soy sauce
- 1 ½ cups French fried onions/ crispy onions
Prepping the Casserole: 1. In a medium saucepan, boil green beans for 4-5 minutes, then transfer to an ice bath to cool. Drain well, removing any excess liquid. 2. In a deep sauté pan, melt butter over medium heat. 3. Add onions, and season with salt and pepper. 4. Cook, stirring occasionally, 2-3 minutes. 5. Add mushrooms, and cook, stirring occasionally 5-6 minutes. 6. Add garlic until just fragrant, 1 minute. 7. Add flour and stir well. 8. Whisk in chicken broth, Worcestershire sauce, soy sauce, and half and half. 9. Cook 6-8 minutes until thick, stirring occasionally. 10. Fold in drained green beans, and cook 2-3 minutes more. 11. Transfer to greased ceramic or metal baking dish (about 9”x6”), and allow to cool completely to room temperature. 12. Cover with a layer of plastic wrap, then with aluminum foil. 13. Freeze for up to 2 weeks.To Bake: 1. Preheat oven to 350 degrees. Take dish out of freezer while oven is preheating. 2. Uncover and remove plastic wrap. Rewrap dish with new foil. 3. Bake covered for 1 hour. 4. Uncover, and stir well. 5. Top with even layer of crispy onions and bake for 30 minutes, uncovered, until onions are browned, and casserole is bubbly. If Cooking right away: 1. If you are not freezing the casserole- bake for 20 minutes covered, and 25-30 uncovered.