Sourdough French Toast Casserole with Lemon Cream Cheese Swirl and Oatmeal Streusel Recipe

If you have a soft spot for cozy weekend breakfasts or brunches that feel like a warm hug, you are going to adore the Sourdough French Toast Casserole with Lemon Cream Cheese Swirl and Oatmeal Streusel Recipe. Imagine cubes of tangy sourdough bread soaked in a luscious custard, layered with a bright, zesty lemon cream cheese swirl, and topped with a crunchy oatmeal streusel that adds the perfect texture contrast. This dish is a true celebration of flavors and textures, an impressive yet approachable dish that transforms simple ingredients into a show-stopping breakfast or brunch centerpiece.

Ingredients You’ll Need

The beauty of this recipe lies in its use of simple, everyday ingredients that come together to create something truly magical. Each component has a purpose — the sourdough adds a hearty tang and a sturdy texture, the cream cheese swirl offers a creamy brightness, and the streusel topping provides a delightful crunch. Let’s dive into what you’ll need.

• Sourdough bread, 1½ pounds: Opt for a good-quality sourdough with a firm crumb to hold up well after soaking.
• Unsalted butter, 6 tablespoons: Essential for browning and adding richness without overpowering other flavors.
• Large eggs, 8: They create the custard base, giving structure and a silky texture.
• Whole milk, 2 cups: Balances richness and lightness in the custard.
• Heavy cream, 1 cup: Adds extra creaminess for that indulgent mouthfeel.
• Granulated sugar, ¾ cup: Sweetens the custard perfectly without being cloying.
• Vanilla extract, 2 teaspoons: Provides warm, comforting background notes.
• Almond extract, ½ teaspoon: Adds a subtle nutty aroma that complements the brown butter beautifully.
• Lemon zest, about 1½ teaspoons total: The star of the lemon cream cheese swirl, it brightens the entire dish.
• Ground cinnamon, 1 teaspoon + ½ teaspoon: Warm spice that ties the flavors together harmoniously.
• Kosher salt, ¼ teaspoon: Just a touch to enhance all the sweet and savory elements.
• Cream cheese, 8 ounces softened: For the lush lemon cream cheese swirl in every bite.
• Powdered sugar, ¼ cup: Sweetens the cream cheese without grittiness.
• Lemon juice, 1 teaspoon: Adds tang to complement the cream cheese.
• Old-fashioned oats, 1 cup: Creates the heart of the oatmeal streusel topping.
• Sliced almonds, ¼ cup: Brings crunch and nuttiness to the streusel.
• Brown sugar, 2 tablespoons packed: Provides caramel notes and stickiness for the streusel.
• Honey, 1 tablespoon: Adds a natural sweetness and helps bind the streusel.

How to Make Sourdough French Toast Casserole with Lemon Cream Cheese Swirl and Oatmeal Streusel Recipe

Step 1: Toast the Sourdough Cubes

Begin by preheating your oven to 350°F. Spread the sourdough cubes on a baking sheet and bake for 10 minutes, stirring halfway through. This toasting step is often overlooked but is *crucial*—it dries out the bread just enough so it soaks up the custard without becoming gummy. You want cubes that look dry but not browned, laying a solid foundation for a perfect texture.

Step 2: Brown the Butter

While the bread cools, melt the butter in a small saucepan over medium heat. Swirl it around and watch closely as it foams and eventually turns a rich golden brown with a nutty aroma. This browned butter is like adding a secret layer of depth and warmth to the custard; pour it into a heat-proof bowl right away to stop the cooking and save every bit of that flavor.

Step 3: Whisk Together the Custard

Now, in a large bowl, whisk the eggs, whole milk, heavy cream, granulated sugar, vanilla, almond extract, lemon zest, cinnamon, and salt vigorously. Slowly drizzle in the warm browned butter as you whisk—this technique emulsifies the custard beautifully, ensuring each bread cube will be evenly coated with this decadent mixture.

Step 4: Prepare the Lemon Cream Cheese Swirl

In a separate bowl, beat the softened cream cheese with powdered sugar, lemon zest, and lemon juice until smooth and lump-free. This mixture brings a lively tartness that contrasts wonderfully against the sweet, custardy bread, brightening the dish and adding a luxurious texture swirl that will make everyone swoon.

Step 5: Assemble the Layers

Lightly butter a 9×13-inch baking dish. Press half the toasted cubes evenly into the bottom. Dollop half of the lemon cream cheese mixture in several spots, then gently swirl with a knife. Pour half the custard over the top. Repeat this layering with the remaining bread, swirl, and custard. Press down lightly to help everything soak together for even baking.

Step 6: Refrigerate Overnight

Cover your casserole tightly with foil or plastic wrap and refrigerate for 8 to 12 hours. This soaking time is key—it lets the custard soak deeply into every bread cube for that ideal creamy yet structured texture. If you’re prepping ahead for company, you can assemble in a freezer-safe dish and freeze, then thaw in the refrigerator before baking.

Step 7: Make the Oatmeal Streusel Topping

In a bowl, combine oats, sliced almonds, brown sugar, cinnamon, melted butter, and honey. Stir until each oat and almond is coated. Chill this streusel while your casserole rests—this will allow it to clump together nicely, creating a crunchy, flavorful topping when baked.

Step 8: Bake the Casserole

Remove the casserole from the refrigerator and preheat the oven to 350°F. Sprinkle the oatmeal streusel evenly over the top and bake uncovered for 45-50 minutes. You’ll want golden edges and a center that’s set but still a little wobbly. If the topping browns too fast, tent with foil after about 30 minutes so it bakes evenly without burning.

Step 9: Rest and Serve

Once baked, let the casserole rest for 10 minutes before slicing. This helps the custard finish setting, making the slices neat and easy to serve. The aroma alone will have everyone gathered around, eager to dig into this comforting morning masterpiece!

How to Serve Sourdough French Toast Casserole with Lemon Cream Cheese Swirl and Oatmeal Streusel Recipe

Garnishes

Adding a few thoughtful garnishes elevates this dish from everyday breakfast to brunch star. Fresh berries like blueberries or raspberries add a juicy contrast and a pop of color, while a dusting of powdered sugar highlights the swirls beautifully. A light drizzle of pure maple syrup or honey adds sweetness without overpowering the delicate lemon notes.

Side Dishes

Pair this casserole with crispy bacon or sausage for a savory balance, or serve alongside a fresh fruit salad for a lighter option. A dollop of Greek yogurt or whipped cream adds creaminess and complements the textural contrast. For a truly indulgent brunch, accompany it with freshly squeezed orange juice or a sparkling mimosa.

Creative Ways to Present

Consider serving this casserole straight from the baking dish family-style for a cozy vibe, or slice into individual portions and plate elegantly for guests. You can even assemble mini versions in ramekins for personalized servings. For a fun twist, add edible flowers or zest curls on top for a festive touch that will wow everyone at your table.

Make Ahead and Storage

Storing Leftovers

Store any leftover casserole covered in the refrigerator for up to 3 days. The flavors will mellow beautifully, and the texture will remain delightful. Be sure to cover it well to prevent the streusel topping from drying out.

Freezing

This casserole freezes remarkably well. Assemble it in a freezer-safe dish, cover tightly, and freeze for up to one month. When ready to enjoy, thaw overnight in the refrigerator and bake as usual. Freezing enhances convenience without compromising the wonderful textures and flavors.

Reheating

To reheat, warm slices in a 350°F oven for about 15-20 minutes or until warmed through, restoring the crispness of the streusel. Avoid microwaving if possible, as it can make the casserole soggy and lose that delightful crunch.

FAQs

Can I use another type of bread besides sourdough?

Absolutely! While sourdough provides a lovely tang and firm structure, hearty breads like brioche or challah also work beautifully. Just be sure the bread is slightly stale or toasted to prevent sogginess.

Is it necessary to brown the butter?

Browning the butter adds a rich, nutty flavor that complements the nutmeg, cinnamon, and lemon zest so well, but if you’re short on time, melted unsalted butter will work. The brown butter just takes this casserole from great to unforgettable.

Can I prepare this casserole without soaking overnight?

You can bake it after a shorter soak, but the texture won’t be quite as custardy or infused with flavor. For best results, give it at least 8 hours to soak to achieve the perfect balance of custard and bread.

How can I make this recipe dairy-free?

Swap the butter for a non-dairy alternative, use coconut or almond milk in place of dairy milk and cream, and choose a dairy-free cream cheese. The flavors will be slightly different but still delicious and satisfying.

What’s the best way to reheat the leftovers?

The oven is your best friend for reheating as it keeps the streusel crisp and the custard creamy. Avoid microwaving to prevent a soggy texture.

Final Thoughts

This Sourdough French Toast Casserole with Lemon Cream Cheese Swirl and Oatmeal Streusel Recipe is a testament to how humble ingredients can come together to create something truly extraordinary. Whether you’re gathering for a festive brunch or simply treating yourself to a slow morning, this dish promises warmth, comfort, and a burst of bright flavor in every bite. I can’t wait for you to try it and make it a beloved staple in your breakfast rotation!

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