I should mention that bacon is an ingredient in the recipe in the book, and I skipped right over it. I started by grating onion on the small holes of a box grater. I used a mix of local sweet potatoes, new potatoes, and a russet. They were grated and squeezed to remove as much liquid as possible before being added to a bowl with the onion. The liquid was squeezed into a bowl and left to sit. The liquid was poured off, and the potato starch collected in the bottom of the bowl was added to the grated potatoes and onion. Eggs and salt were added and mixed to combine. I brushed olive oil on the baking sheet, and pressed the potato mixture into the pan. The surface of the potato mixture was brushed with more oil before baking. For the filling, I used some fresh, local spinach that I washed and sauteed with minced local leeks. I added some creme fraiche that I had on hand and then layered it over the baked potato crust. I created open spaces for the eggs and cracked jumbo eggs on top. The pie went back into the oven until the eggs were set. It was sprinkled with grated parmesan before serving.
This was a hearty brunch dish with the potato crust and its crispy edges. I wished that my spinach layer had been a bit thicker to hold the eggs in place a little better, and that’s because I might have had a bit less spinach that called for in the recipe. I’ll use more next time. Or, I might try a different filling for the potato crust. Or, I might try several other pies from the book first. One thing is for sure, I’ll be making more pies.
Eggs Florentine Slab Pie with a Hash Brown Crust
Excerpted from the book Pie Squared: Irresistibly Easy Sweet & Savory Slab Pies
Sometime in the 1980s, I developed a deep and abiding love for eggs Florentine: It’s the creamy spinach stirred together with a runny egg yolk. That sumptuous mixture was precisely the inspiration for this breakfast pie. It’s what you want on a snowy morning—slightly wobbly coddled eggs basted with cream in a delicious roasted potato crust whose scent means carrying the pie from oven to table is a moment worthy of everyone’s attention. Because nearly everyone likes bacon, scatter crispy bits across the top. All that, and it’s gluten-free, too. Do not use a convection oven as a breeze wafting over the eggs results in a weird, rubbery texture.
1/2 pound (225 g) smoked bacon, chopped, optional
HASH BROWN CRUST
1 medium onion (142 g), peeled
1-1/2 pounds (680 g) russet potatoes (about 4), scrubbed but not peeled
1 large egg plus 1 egg white, beaten
1 teaspoon kosher salt
1/2 teaspoon coarsely ground black pepper
2 tablespoons neutral oil like canola or grapeseed (if not using bacon fat)
FILLING
1 (16-ounce) bag frozen chopped spinach (453 g), defrosted and the liquid squeezed out
4 tablespoons (56 g) unsalted butter
1 medium yellow onion (140 g), chopped into 1/2-inch dice (about 1 cup)
1/4 teaspoon nutmeg
1 cup (240 ml) heavy cream
1 teaspoon salt 1/2 teaspoon freshly ground black pepper
8 large eggs (or see swaps)
1/2 cup (120 ml) heavy cream
TOPPING
4 tablespoons grated Pecorino cheese
2 tablespoons chopped chives
Heat the oven to 350 degrees F. Scatter the bacon across the slab pie pan, and bake for 15 to 20 minutes, until crispy. With a slotted spoon, transfer the bacon to a paper towel–lined plate and drain. Do not dispose of the bacon fat, but pour some into a small bowl and leave the rest in the pan. Increase the oven temperature to 425 degrees F; if you have one, place a baking stone, Baking Steel, or inverted baking sheet on the center rack to heat.
For the crust: Grate the onion on the medium holes of a box grater or a food processor’s grating disk (my preference). Place the onions in a medium mixing bowl. Grate the potatoes on the large holes side of the box grater, and, taking a handful at a time, squeeze the shreds over a small bowl. As each handful is squeezed, place in the bowl with the onions. Continue until all the potatoes have been grated and their liquid squeezed out. Work quickly to keep the potatoes from turning brown. You should have about 4 cups of dry-ish potatoes in the end.
Let the potato liquid sit for about 5 minutes, until the starch and liquid separate. Pour off the liquid, keeping the starchy white paste at the bottom. That’s potato starch and we love it. Add the starch to the grated onions and potatoes, then add the egg and egg white, salt, and pepper and stir with your hands. If bacon fat is not present on the baking sheet, brush the neutral oil into the corners and across the bottom of the pan. Firmly press the potato mixture into the pan using the sides of your hand and your knuckles. Brush the surface of the potatoes with bacon fat. Bake (on top of the steel, stone, or baking sheet if using) until the potatoes have started to turn brown, 35 to 45 minutes
For the filling: Use your hands (or a colander and a firm wooden spoon) to squeeze the liquid out of the spinach. The drier the spinach, the less time is required to cook it, which keeps the flavor fresh and green and not metallic.
In a large, wide sauté pan, melt the butter over medium heat until frothy. Add the diced onions and cook until translucent, about 7 minutes. Turn up the heat, add the spinach, and cook until the mixture is nearly dry, another 5 to 7 minutes. Grate nutmeg over the spinach and add the cream, salt, and pepper. Cook, stirring over medium heat, until slightly thickened, 5 to 7 minutes more.
When the potato crust is baked and all crispy and browned, spread the spinach filling thickly over the top. Use the bottom of a ladle to form 8 wells in the spinach mixture and crack an egg into each divot. Spoon a tablespoon of cream over each egg.
Scatter the crispy bacon bits all across the pie. Slip the pan back in the oven and bake for 12 to 15 minutes, until the eggs’ whites are cooked through. Remove the pan from the oven and sprinkle with the Pecorino and chives. Serve right away.
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