This baked French toast casserole with blackberry maple syrup is an easy make-ahead breakfast that’s perfect for holidays, brunch, or a simple morning meal. Crusty bread is soaked in a lightly sweetened, creamy custard with juicy blackberries, then baked and finished with a vibrant blackberry syrup.
The tart-sweet blackberries add a bright layer of flavor that complements the rich custard. This dish quickly becomes a family favorite and works especially well for holiday mornings. Below you’ll find helpful tips and a clear recipe to make the best baked French toast casserole.
For the casserole: a loaf of crusty bread (such as sourdough), eggs, milk, whole-milk Greek yogurt, maple syrup (or honey), vanilla, salt, and blackberries. For the blackberry maple syrup: frozen blackberries, maple syrup, vanilla, cornstarch, and a pinch of salt.

This post was created in collaboration with the Oregon Blackberry and Raspberry Commission. All opinions are my own.
We moved to Oregon two years ago, and since then we’ve enjoyed exploring the area, meeting wonderful people, and tasting the local produce—especially blackberries. The first summer here we sampled wild marionberries and blackberries on a small farm, and the sweetness and vivid color made a lasting impression. Those fresh tastes inspired this casserole, which is easy to make any time of year using frozen berries.
Enter the Delicious Oregon Blackberry
Oregon produces the majority of the nation’s frozen blackberries, and the climate is ideal for growing them. Frozen Oregon blackberries let you enjoy summer flavor year-round and are especially handy for recipes like this casserole. We often keep frozen fruit on hand for evening snacks, and those berries are a favorite with the kids.
Using frozen blackberries in this recipe makes the dish accessible no matter the season, and the syrup brings concentrated berry flavor that lifts the whole recipe.

A Healthy Breakfast Dish
This baked French toast casserole tastes indulgent but uses real-food ingredients and no refined sugar. Blackberries contribute vitamin C, vitamin K, and fiber, so this breakfast feels wholesome even when it tastes like dessert. The blackberry syrup is especially delicious—it’s amazing on pancakes, ice cream, or toast, and worth the small extra effort to make instead of using plain maple syrup.
To create a thicker, custardy filling, this recipe includes whole-milk Greek yogurt. The result is more of a custard French toast than a standard casserole: tender, rich, and satisfying whether served warm or cold.
Tips on Making Baked French Toast Casserole
- Use crusty bread such as sourdough, French bread, or a country loaf. Day-old bread works well. Soft sandwich bread can become overly soggy, especially with an overnight soak.
- Let the bread soak in the custard for about 30 minutes for a tender, custardy texture. If using very fresh soft bread, limit soaking to 30–60 minutes.
- Depending on the loaf size and density, you may not need all the custard mixture—watch how the bread soaks it up.
- To distribute berries evenly, add a layer of bread, scatter blackberries, then add another bread layer and more berries.
- You can substitute or combine blackberries with raspberries or marionberries.
Make the casserole on the weekend and reheat leftovers for a quick weekday breakfast—toast, microwave, or warm in a skillet with a little butter. It’s delicious any way you serve it.

Baked French Toast Casserole Recipe With Blackberry Maple Syrup
Baked French Toast Casserole With Blackberry Syrup
Crusty bread is baked in a lightly sweetened, creamy custard with blackberries, then topped with blackberry syrup.
Prep Time: 10 minutes | Total Time: 55 minutes | Servings: 8
Ingredients
- 1 loaf crusty bread (about 16 oz)
- 6 eggs
- 1.5 cups milk
- 1 cup whole-milk Greek yogurt
- 1/2 cup maple syrup or honey
- 1 tsp vanilla extract
- 2 cups frozen blackberries (for casserole)
Blackberry Syrup
- 3/4 cup maple syrup
- 2 cups frozen blackberries
- 1/2 tbsp vanilla extract
- 1 tbsp cornstarch
- Dash of salt
Instructions
French Toast Casserole
- In a large bowl, whisk together eggs, yogurt, milk, vanilla, and maple syrup. Set aside.
- Cut the bread into strips and layer half of it in a 9×13-inch baking pan.
- Scatter 1 cup frozen blackberries over the bread, then layer the remaining bread and top with the remaining blackberries.
- Pour the custard over the bread. Allow it to soak in and refrigerate for at least 30 minutes to an hour.
- Preheat the oven to 350°F (175°C). Press down any bread that floated up, then bake for 45–60 minutes until set and golden.
Blackberry Syrup
- In a saucepan over medium heat, combine blackberries and maple syrup and bring to a simmer. Cook 5–10 minutes until the berries break down.
- In a small cup, mix cornstarch with a splash of water and vanilla to make a slurry. Stir the slurry into the warm syrup, bring to a boil for about a minute until thickened, then remove from heat and cool. Store in the refrigerator 4–7 days.
Notes
Loaf sizes vary. If your loaf is small or particularly dense, you may need less of the custard mixture. Use visual judgment when pouring the custard so the bread is well coated but not swimming.
Nutrition (approx.)
Per serving: Calories 408 | Carbohydrates 73 g | Protein 15 g | Fat 5 g | Fiber 5 g | Sugar 38 g
Course: Breakfast | Cuisine: American

Have you tried Oregon blackberries? What’s your favorite way to enjoy them?
If you love this recipe, you might also enjoy:
- Apple Dutch Baby Pancake
- Blackberry Breakfast Bread
- Banana Pumpkin Breakfast Muffins
Thank you to the Oregon Blackberry and Raspberry Commission for sponsoring this post.
