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Green Bean Casserolewith Au Poivre Mushroom Sauce and Frizzled Leeks

Recipe by babytamago on TikTokAdded 9 November 2026.

15 minutes to prep, 15 to cook. A vibrant green bean side dish elevated with a peppery mushroom sauce and crisp frizzled leeks. The combination of fresh beans, aromatic mushrooms, and a silky white sauce creates a flavorful, crunchy‑topped accompaniment perfect for a Thanksgiving spread.

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Method

  1. Boil water.

  2. Blanch the green beans in the boiling water, then drain them.

  3. Sauté the green beans in a pan.

  4. Add minced garlic to the green beans and continue sautéing.

  5. In a separate pan, sauté sliced mushrooms with chopped shallots, minced garlic, and thyme.

  6. Crush peppercorns in a bag and add them to the mushroom mixture.

  7. Add a crunchy shredded leeks topping to the sautéed mushrooms.

  8. Pour the white liquid into the mushroom pan and stir to combine into a sauce.

  9. Combine the mushroom sauce with the green beans and serve.

Tips while you cook

Blanch before sauté
Blanch the green beans, drain, then sauté them.
Crush peppercorns in a bag
Use a bag to crush peppercorns before adding to the mushroom mixture.
Add leeks last for crunch
Stir in shredded leeks after sautéing mushrooms.

Notes from ReelsMeals, based on this recipe's ingredients, times and method. They are not the creator's instructions.

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The recipe comes from babytamago’s TikTok video. ReelsMeals wrote it down from the caption and the voiceover. Check the original if something looks off, and for anything about allergens.

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