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Why This Recipe Works
- Make-Ahead Magic: Assemble the night before, refrigerate, then bake while coffee brews.
- Bacon in Every Bite: Weave bacon into three layers for smoky depth without greasy pockets.
- Vegetable Balance: Baby spinach and roasted red peppers keep the casserole bright and colorful.
- Cheese Strategy: Sharp cheddar for punch, Havarti for creaminess, and a Parmesan crown for crunch.
- Customizable Base: Swap bread varieties, use gluten-free options, or go dairy-light with zero drama.
- Feeds a Crowd: One 9×13-inch pan yields twelve generous slices—perfect for buffet-style serving.
Ingredients You'll Need
Great casserole success begins with ingredient intentionality. Thick-cut, applewood-smoked bacon renders slowly, basting the bread cubes with flavor while staying lusciously meaty. Choose a sturdy artisan loaf—sourdough or country white—staled overnight so it can drink up the custard without collapsing. Whole milk and a splash of heavy cream create silkiness, while a trio of cheeses ensures every forkful is both gooey and complex. Frozen spinach is my week-old-self’s gift: thaw, squeeze, and stir—no wilting pans to scrub. Finally, a whisper of Dijon and hot sauce wakes up sleepy taste buds without shouting “spicy!” at your grandmother.
How to Make New Year's Day Brunch Casserole with Bacon
Prep the Pan & Oven
Butter a 9×13-inch glass or ceramic baking dish and set on a rimmed sheet tray (insurance against bubble-over). Preheat oven to 325 °F if baking immediately; otherwise skip this step for overnight chilling.
Render the Bacon
Slice one pound of bacon into ½-inch lardons. Place in a cold skillet, turn heat to medium, and cook 8–10 minutes until fat liquefies and edges caramelize. Transfer to paper towel-lined plate; reserve 2 Tbsp drippings for bread toasting.
Toast the Bread
Toss 8 cups cubed stale bread with reserved drippings and a pinch of salt. Spread on sheet pan; bake at 325 °F for 12 minutes, stirring halfway, until lightly crisp outside yet still tender inside. Cool 5 minutes.
Whisk the Custard
In a large bowl, whisk 8 large eggs, 2 cups whole milk, ½ cup heavy cream, 2 Tbsp Dijon, 1 Tbsp Worcestershire, 1 tsp kosher salt, ½ tsp pepper, ¼ tsp grated nutmeg, and 1 tsp hot sauce until homogeneous.
Layer the Goodness
Scatter half the toasted bread in prepared dish; top with half the bacon, 1 cup baby spinach, ½ cup diced roasted red peppers, and 1 cup shredded sharp cheddar. Repeat layers, ending with ½ cup Havarti cubes and ¼ cup grated Parmesan.
Flood & Chill
Slowly pour custard over strata, pressing lightly so every cube is moistened. Cover with buttered foil; refrigerate at least 4 hours or up to 24 to let flavors meld and bread fully absorb liquid.
Bake Low & Slow
Remove casserole 30 minutes before baking to take chill off. Keep foil on; bake at 325 °F for 40 minutes. Remove foil, increase heat to 375 °F, bake 20–25 minutes more until puffed, golden, and center registers 190 °F.
Rest & Serve
Let stand 10 minutes—this sets the custard and saves everyone’s tongues. Sprinkle with fresh chives and a final crack of black pepper. Slice into twelve squares and serve with mimosas or strong coffee.
Expert Tips
Overnight = Better
A full 12-hour rest allows custard to saturate bread evenly, eliminating soggy pockets and producing a sliceable, restaurant-quality texture.
Drain the Spinach
Squeeze thawed spinach in a clean kitchen towel until almost dry; excess water dilutes custard and mutes flavors.
Temp It
An instant-read thermometer removes guesswork: 190 °F yields a set center without dryness.
Crisp Top Trick
Broil 1–2 minutes at the end, watching like a hawk, for an extra-golden cheesy crust that crackles under the fork.
Variations to Try
- Tex-Mex Twist: Sub pepper-jack for Havarti, add diced green chiles, and serve with salsa verde.
- Smoked Gouda & Ham: Replace half the bacon with diced smoked ham and swap in Gouda for a Dutch-style strata.
- Mushroom Lover: Sauté 8 oz creminos until golden; layer in place of spinach for an umami boost.
- Lightened Up: Use turkey bacon, 2% milk, and halve the cheese; add roasted butternut squash for sweetness.
Storage Tips
Refrigerate: Cool leftovers completely, cut into squares, and store in an airtight container up to 4 days. Reheat individual portions in microwave 60–90 seconds, or warm covered at 325 °F for 15 minutes.
Freeze: Wrap squares in plastic wrap then foil; freeze up to 2 months. Thaw overnight in fridge and reheat as above.
Make-Ahead: Assemble through Step 6, cover tightly, and refrigerate up to 24 hours. Add 5–10 extra minutes to covered bake time if starting cold.
Frequently Asked Questions
New Year's Day Brunch Casserole with Bacon
Ingredients
Instructions
- Prep the dish: Butter a 9×13-inch baking dish and set on a sheet tray.
- Cook bacon: Render bacon until crisp; reserve 2 Tbsp drippings.
- Toast bread: Toss bread cubes with drippings; bake at 325 °F 12 min.
- Make custard: Whisk eggs, milk, cream, Dijon, Worcestershire, salt, pepper, nutmeg, and hot sauce.
- Assemble: Layer bread, bacon, spinach, peppers, and cheeses twice; pour custard over top.
- Chill: Cover and refrigerate at least 4 hours or up to 24.
- Bake: Cover with foil, bake 40 min at 325 °F; uncover, increase to 375 °F, bake 20–25 min more until center is 190 °F.
- Rest & serve: Let stand 10 min, sprinkle with chives, slice, and enjoy.
Recipe Notes
For extra crunch, broil 1–2 min at the end. Leftovers reheat beautifully in microwave or oven.
