Bagel Breakfast Casserole

Directions

1. Position a rack in the center of the oven and preheat to 350 degrees F. Grease a 9-by-13-inch baking dish with 1 tablespoon of olive oil.
2. Heat the olive oil in a large skillet over medium-high heat. Add the sausage and cook, breaking up any clumps with a wooden spoon, until brown, about 5 minutes, add garlic, shallot, and spinach. Continue cooking until wilted, then transfer to a bowl with a slotted spoon.
3. Whisk together the milk, half-and-half, cayenne, eggs, 3/4 teaspoon salt, and 1/2 teaspoon pepper in a large bowl. Fold in the sausage mixture, bagels and 3/4 cup of the cheese, then pour into the prepared baking dish. Dot the top with the cream cheese and sprinkle all over with the everything bagel seasoning and remaining cheese.
4. Cover with foil and bake for 45 minutes. Uncover and bake until the casserole is puffed, golden brown at the edges, and set in the center, about 45 minutes more. Let cool for 15 minutes before serving.