A fresh, homemade green bean casserole with crisp-tender green beans, creamy mushroom sauce, and a crispy shallot topping, made without canned shortcuts.
Do not skip blanching the green beans to keep them crisp and vibrant. Cook mushrooms low and slow to avoid watery sauce. Fully cook out the flour to prevent a pasty taste. Use enough oil for frying shallots so they crisp quickly. Season shallots immediately after frying. Add crispy shallots only in the last 10 minutes of baking to keep crunch. If sauce is too thick or clumpy, whisk vigorously or add a splash more milk. You can prep mushroom sauce and fry shallots a day ahead and store separately.
Keywords: green bean casserole, homemade green bean casserole, mushroom sauce, crispy shallots, holiday side dish, comfort food