Slow-Cooker Pumpkin Spice Brioche French Toast Casserole Step-by-step instructions

Before you start

Before starting, cut the brioche into 1-inch cubes and let them sit out to dry slightly if you have time. Measure all the ingredients, and make the streusel first so it's ready to sprinkle on top.

Whisk the custard ingredients together in a large bowl, making sure the pumpkin and spices are fully incorporated. Have your slow cooker insert ready, and lightly grease it if you like — though it's not necessary with the custard's richness. Set out the maple syrup and whipped cream for serving.

Instructions

Prep the Streusel and Custard

1. 1Make the Streusel
   In a small bowl, combine the brown sugar, flour, and chopped pecans. Add the cold butter pieces and work them into the dry mixture with a pastry cutter or your fingertips until the mixture forms coarse crumbs. Set the streusel aside while you prepare the custard and bread.
   Look for The streusel should look like wet sand with some pea-sized butter pieces.
   Tip Keep the butter cold for a crumbly, crisp topping — if the mixture warms, chill it briefly.
2. 2Whisk the Pumpkin Custard
   In a large mixing bowl, whisk together the pumpkin puree, eggs, evaporated milk, maple syrup, pumpkin pie spice, and salt until completely smooth and uniform. The mixture will be thick and glossy. Make sure no streaks of egg remain.
   Look for The custard is a deep orange, silky liquid that coats the back of a spoon.
   Tip Whisk thoroughly so the spices and pumpkin are evenly distributed — this ensures every bite is spiced.
3. 3Toss the Brioche with Custard
   Place the brioche cubes in the slow cooker insert. Pour the pumpkin custard over the bread and gently toss with a rubber spatula until every cube is coated. Press the bread down slightly so it soaks up the custard evenly.
   Look for The bread looks moist and orange-tinted, with no dry spots.
   Tip Use a light hand — you want to coat the bread, not mash it into a paste.

You'll have a bowl of crumbly streusel with visible butter pieces and a large bowl of smooth, deep-orange pumpkin custard. The custard should be thick and glossy, with no streaks of egg.

The brioche cubes are piled in the slow cooker, ready to be tossed. Everything is measured and within reach, so the assembly goes quickly.

Slow-Cook to Set the Custard

4. 4Top with Streusel
   Sprinkle the prepared streusel evenly over the top of the bread mixture in the slow cooker. Gently press the streusel into the bread so it adheres slightly, but leave some loose crumbs for texture.
   Look for The top is covered with an even layer of crumbly streusel.
   Tip Don't stir the streusel into the custard — keeping it on top lets it crisp during cooking.
5. 5Slow-Cook on Low
   Cover the slow cooker and cook on LOW for 3 1/2 hours. Avoid lifting the lid during the first 2 hours, as the heat escapes and extends cooking time. The casserole is done when the custard is set and the streusel is golden and crisp on top.
   Look for The edges look puffed and golden, and a knife inserted in the center comes out clean.
   Safe temperature 160°F (71°C) internal temperature (egg dishes)
   Tip If the top browns too quickly, place a clean kitchen towel under the lid to catch condensation.

After 3 1/2 hours on low, the kitchen smells of pumpkin, cinnamon, and maple. The top is golden brown with crispy streusel, and the edges look set. A knife inserted in the center comes out clean, and the internal temperature reads at least 160°F (71°C). The casserole is puffed slightly and looks moist but not wet.

Rest and Serve

6. 6Rest and Serve
   Turn off the slow cooker and let the casserole rest for 10 minutes. This allows the custard to settle and makes serving cleaner. Cut into squares and serve warm with a dollop of maple cinnamon whipped cream and a drizzle of pure maple syrup.
   Look for The casserole is tender, moist, and fragrant with pumpkin and spice.
   Tip Use a wide spatula to lift out neat squares — the bottom will be soft and custardy.

The casserole has rested for 10 minutes and holds its shape when cut into squares. Each serving is tender, custardy, and fragrant, with a crisp streusel topping. The whipped cream melts slightly into the warm casserole, and the maple syrup pools around the edges. It's ready to serve to a hungry brunch crowd.

Common mistakes

One common mistake is lifting the lid too often during cooking, which lets out heat and extends the time needed for the custard to set. Another is using bread that's too fresh and soft — it can turn mushy.

Letting the brioche cubes dry out a bit helps. Overmixing the custard can make it foamy, so whisk just until smooth. Also, don't skip the rest time after cooking; it allows the custard to firm up, making serving easier and tidier.

How to tell it’s done

The casserole is done when the custard is set and the streusel is golden and crisp. To check, insert a knife or toothpick into the center — it should come out clean, and the internal temperature of the custard should reach at least 160°F (71°C) to ensure the eggs are fully cooked.

The edges will look slightly puffed and the top will be browned in spots. Let the casserole rest for 10 minutes before serving; this helps it hold its shape when cut.

• Egg dishes: 160°F (71°C) in the thickest part