This make-ahead eggnog French toast bake is the ultimate Christmas morning breakfast. With a rich custard, buttery brioche, and a crunchy streusel topping, it’s a cozy, effortless dish that lets you enjoy the holiday with loved ones instead of standing at the stove.
Use day-old bread for best texture. Do not skip the overnight soak—it allows the custard to fully penetrate the bread. Keep streusel cold until ready to bake. Do not overbake; the center should be soft and custardy. For a gluten-free version, use sturdy gluten-free bread and reduce soak time to 4-6 hours. For a dairy-free option, use dairy-free eggnog and plant-based butter. For an adult version, add 2 tablespoons dark rum or bourbon to the custard.
Keywords: eggnog french toast bake, christmas breakfast, make-ahead breakfast, holiday brunch, brioche french toast casserole