- The overnight soaking is crucial for the best texture - don't skip this step if possible.
- For a vegetarian version, omit the sausage and add 2 cups of sautéed mushrooms instead.
- Day-old bread works best as it absorbs the egg mixture better than fresh bread.
- Leftovers can be stored in the refrigerator for up to 3 days or frozen in individual portions for up to 2 months.
- The unbaked casserole can be frozen for up to 1 month; thaw in refrigerator for 24 hours before baking.