Roasted Vegetable Strata

September. Fall arrives and the world shifts and I shift with it, the internal season matching the external, the gray sky reflecting the gray calm that autumn brings to my anxious brain. I have always been better in fall. The anxiety quiets when the leaves turn. The introspection deepens when the rain returns. The cooking becomes richer, deeper, the same way the flavors deepen when you braise instead of grill, when you simmer instead of stir-fry, when you let the heat work slowly instead of fast.

I made kabocha nimono — the first of the season, the annual return, the ritual that I have now performed for eight consecutive years in three different kitchens (Fumiko's influence, the old apartment, this apartment) and that has not changed in any of them. The recipe is the recipe. The kabocha is the kabocha. The dashi-soy broth is the broth. The only thing that changes is the woman making it, and the woman has changed enormously — from a new mother to a divorced writer to whatever I am now, which is: a woman who makes kabocha nimono every September with the certainty of a person who has found the one true recipe and does not need another.

Miya started third grade. She walked into the school like she owned it, which she does, in the way that children own their schools — not legally but emotionally, the building as an extension of themselves, the classroom as a second home. She has friends, she has teachers she likes, she has a routine that does not include me for seven hours a day. The seven hours are mine. The seven hours are writing and yoga and the farmers market and the small domestic tasks that are invisible and essential and that no one thanks you for and that constitute the infrastructure of a life.

Saturday Japanese school continues and Miya's Japanese is now good enough that we occasionally speak in Japanese at home — simple sentences, kitchen language, the vocabulary of cooking. "Oishii?" I ask. "Oishii," she confirms. "Itadakimasu," she says before eating. "Gochisousama," she says after. The phrases are the frame. The frame holds the conversation. The conversation is the practice. The practice is becoming natural, the way breathing is natural, the way the Japanese was always there, waiting in the DNA, waiting in the kitchen, waiting for a seven-year-old to wake it up.

There is no kabocha nimono recipe I can hand you — that one lives only in my kitchen, unchanged across eight Septembers, and it belongs to me the way certain things simply do. But the spirit of it — the layering, the slow oven heat, the vegetables softening into something richer than they started — that spirit translates. This roasted vegetable strata is what I make when I want to offer someone else the feeling of fall cooking: unhurried, layered, the kind of dish that rewards patience the same way a good braise does, the same way a good season does.

Prep Time: 25 minutes | Cook Time: 50 minutes | Total Time: 1 hour 15 minutes | Servings: 6

Ingredients

8 cups day-old crusty bread, cut into 1-inch cubes (about 1 small loaf)
2 cups butternut squash or zucchini, diced into 3/4-inch pieces
1 red bell pepper, diced
1 cup cremini mushrooms, sliced
1 medium yellow onion, thinly sliced
3 cloves garlic, minced
3 tablespoons olive oil, divided
1 teaspoon fresh thyme leaves (or 1/2 teaspoon dried)
1/2 teaspoon fresh rosemary, minced
6 large eggs
2 cups whole milk
1/2 cup heavy cream
1 1/2 cups shredded Gruyère or sharp cheddar, divided
1 teaspoon Dijon mustard
3/4 teaspoon kosher salt, plus more for vegetables
1/2 teaspoon black pepper
Pinch of freshly grated nutmeg

Instructions

Preheat and prep. Heat oven to 425°F. Toss squash, bell pepper, mushrooms, and onion with 2 tablespoons olive oil, a generous pinch of salt, and the thyme and rosemary. Spread on a rimmed baking sheet in a single layer.
Roast the vegetables. Roast for 20–22 minutes, stirring once halfway through, until the edges are caramelized and the squash is just tender. Add the garlic in the last 3 minutes of roasting. Remove and reduce oven temperature to 350°F.
Toast the bread. While the vegetables roast, toss the bread cubes with the remaining 1 tablespoon olive oil and spread on a second baking sheet. Toast in the oven for 8–10 minutes until lightly golden. Set aside.
Whisk the custard. In a large bowl, whisk together the eggs, milk, cream, Dijon mustard, 3/4 teaspoon salt, black pepper, and nutmeg until smooth and fully combined.
Layer the strata. Lightly grease a 9x13-inch baking dish. Arrange half the bread cubes in an even layer. Scatter all the roasted vegetables over the bread, then sprinkle with 3/4 cup of the cheese. Top with the remaining bread cubes.
Add the custard. Pour the egg mixture evenly over the strata, pressing down gently with a spatula to help the bread absorb the liquid. Sprinkle the remaining 3/4 cup cheese over the top. Let rest for 10 minutes so the bread soaks through.
Bake. Bake at 350°F for 40–45 minutes, until the custard is fully set in the center (a knife inserted in the middle should come out clean) and the top is deep golden brown. If the top browns too quickly, tent loosely with foil after 30 minutes.
Rest and serve. Let the strata rest for 10 minutes before slicing. Serve warm, straight from the baking dish.

Nutrition (per serving)

Roasted Vegetable Strata — The Annual Return to Slow, Warm Cooking