Love this? Pin it for later!
Why This Recipe Works
- Overnight magic: Assemble the night before; the bread drinks in the custard so every cube bakes up custardy, not soggy.
- Holiday flavor trifecta: Smoky ham, caramelized squash, and earthy Brussels sprouts hit sweet-salty-savory notes in every forkful.
- Texture contrast: A final shower of cheese creates a lacy, crackly top that shatters against the fluffy interior.
- Flexible veg: Swap in any roasted winter produce—parsnips, beets, or leftover chestnuts all welcome.
- Feeds a crowd: One 13×9 pan yields twelve generous slices; scale up for a buffet or halve for intimate mornings.
- Freezer-friendly: Bake, cool, cut into squares, and freeze; reheat in a toaster oven for busy January breakfasts.
Ingredients You'll Need
Great strata starts with great bread. Reach for a sturdy artisan loaf—sourdough, ciabatta, or a day-old baguette. Avoid pre-sliced sandwich bread; it collapses into mush. Stale bread is actually preferable because the drier crumb acts like a sponge, sucking up the egg mixture without falling apart. If your loaf is fresh, cube it, spread on a sheet pan, and dry at 225 °F for 30 minutes.
For the ham, I buy a ½-inch-thick slice from the deli counter and dice it myself. Thick-cut retains moisture; thin shaved ham turns stringy. Leftover honey-baked ham from a holiday roast is spectacular here—just trim excess glaze so the strata doesn’t skew cloyingly sweet. If you’re starting from scratch, smoked turkey or Canadian bacon work, but ham’s gentle sweetness against the vegetables is unbeatable.
Winter vegetables should be roasted until their edges blister and sugars concentrate. Butternut squash caramelizes beautifully, while Brussels sprouts char into cabbage-y candy. Peel and cube the squash ½-inch so it mingles with the bread; shred sprouts so they lace every bite. If beet-stained fingers aren’t your thing, golden beets or sweet potatoes offer the same earthy sweetness without the magenta bleed.
Gruyère is my cheese of choice—nutty, melty, and Swiss enough to conjure fondue nostalgia. A small dose of aged white cheddar on top adds sharpness and that Instagram-bubbly lid. Dairy-free? Replace milk with oat milk and swap cheese for a plant-based mozzarella that melts smoothly.
Finally, season the custard boldly. Winter produce loves warm spices: a whisper of nutmeg, smoked paprika, and fresh thyme elevate the ordinary into holiday territory. Taste the raw custard—yes, it feels weird—but it should be slightly over-salted and over-spiced; the bread will dilute both.
How to Make Festive Breakfast Strata with Ham and Winter Vegetables
Roast the vegetables
Preheat oven to 425 °F. Toss 3 cups cubed butternut squash and 2 cups halved Brussels sprouts with 2 Tbsp olive oil, 1 tsp kosher salt, ½ tsp black pepper, and ½ tsp smoked paprika on a parchment-lined sheet. Spread in a single layer; roast 20 min, flip, then 15 min more until bronzed and tender. Cool completely. This can be done up to 3 days ahead; store chilled.
Cube and dry the bread
Cut 1 lb sourdough loaf into 1-inch cubes (about 10 cups). If fresh, spread on two rimmed pans and bake at 225 °F for 30 min, stirring twice, until surface feels dry and slightly crisp. Cool.
Whisk the custard
In a large bowl, whisk 8 large eggs, 2 cups whole milk, 1 cup half-and-half, 2 Tbsp Dijon mustard, 1 Tbsp honey, 1 ½ tsp kosher salt, ½ tsp pepper, ¼ tsp freshly grated nutmeg, and 1 Tbsp minced fresh thyme until homogeneous. The small hit of honey echoes the ham’s sweetness and helps the top brown.
Build the layers
Lightly butter a 13×9-inch baking dish. Scatter half the bread cubes, half the roasted vegetables, 1 ½ cups diced ham, and 1 cup shredded Gruyère. Repeat with remaining bread and vegetables. Pour custard evenly over top. Press down with a spatula so every cube is moistened. Top with remaining 1 cup Gruyère plus ½ cup sharp white cheddar for a blistered lid.
Refrigerate overnight
Cover with plastic wrap, pressing directly against surface to prevent drying. Refrigerate at least 8 h and up to 24 h. Longer soaking yields creamier centers; 8 h is the minimum for full saturation.
Bake low and slow, then brown
The next morning, remove strata from fridge 30 min before baking. Preheat to 325 °F. Bake uncovered 45 min; the center should jiggle slightly. Increase heat to 425 °F for 10-12 min until the cheese blisters and a thermometer inserted in center reads 170 °F. Rest 10 min to set custard.
Garnish and serve
Sprinkle with chopped parsley and pomegranate arils for festive color. Slice into 12 squares and serve with cranberry compote or a simple green salad dressed with orange vinaigrette.
Expert Tips
Dry bread equals fluffy strata
Slightly stale bread soaks up custard without collapsing. If time-pressed, toast fresh cubes at 225 °F for 30 min.
Rest for texture
Letting the strata sit overnight allows starch to swell slowly, preventing that dreaded watery layer on the bottom.
Check temp, not clock
Ovens vary; bake until center hits 170 °F. Over-baking dries eggs; under-baking leaves a soggy core.
Use room-temp dairy
Cold milk shocks eggs, creating lumps. Let dairy stand 20 min or microwave 30 sec to take the chill off.
Layer cheese twice
Cheese inside the strata melts into gooey pockets; cheese on top bronzes into a crispy lid—best of both worlds.
Bake from cold
Starting chilled ensures the center cooks gently; just add 10 extra minutes if baking straight from fridge.
Variations to Try
- Vegetarian: Replace ham with 2 cups sautéed cremini mushrooms and ½ cup toasted hazelnuts for umami crunch.
- Seafood twist: Swap ham for cold-smoked salmon; add dill and capers, replacing nutmeg with lemon zest.
- Spicy Southwest: Use chorizo, roasted poblanos, pepper-jack, and cilantro; serve with salsa verde.
- Italian stuffing: Kale, sun-dried tomatoes, Italian sausage, and fontina evoke Thanksgiving stuffing vibes.
- Gluten-free: Replace bread with cubed gluten-free cornbread; reduce soaking time by 2 h because cornbread is more delicate.
Storage Tips
Make-ahead: Assemble up to 24 h before baking. If prepping further ahead, freeze the unbaked strata: wrap dish tightly in plastic and foil; freeze up to 2 months. Thaw 24 h in refrigerator before baking.
Leftovers: Cool completely, cut into squares, and refrigerate in airtight container up to 4 days. Reheat squares on a sheet pan at 325 °F for 12 min or microwave 60-90 sec. For best texture, avoid reheating entire dish in microwave—edges rubberize.
Freezing cooked strata: Wrap individual squares in parchment, then foil; freeze up to 2 months. Reheat from frozen at 300 °F for 25 min or thaw overnight and toast 8 min.
Frequently Asked Questions
Festive Breakfast Strata with Ham and Winter Vegetables
Ingredients
Instructions
- Roast vegetables: Preheat oven to 425 °F. Toss squash and Brussels with oil, 1 tsp salt, pepper, and paprika. Roast 20 min, flip, 15 min more until caramelized. Cool.
- Dry bread: If fresh, dry bread cubes at 225 °F for 30 min; cool.
- Make custard: Whisk eggs, milk, half-and-half, mustard, honey, remaining ½ tsp salt, nutmeg, and thyme.
- Assemble: Butter 13×9 dish. Layer half the bread, half the veg, all the ham, and 1 cup Gruyère. Top with remaining bread and veg. Pour custard; press. Sprinkle remaining 1 cup Gruyère and cheddar.
- Chill: Cover; refrigerate 8–24 h.
- Bake: Preheat 325 °F. Bake uncovered 45 min, then 425 °F 10-12 min until center 170 °F. Rest 10 min, garnish, serve.
Recipe Notes
Strata can be baked, cooled, cut, and frozen up to 2 months. Reheat squares at 300 °F for 20 min for a quick weekday breakfast.
