You can add some of the ingredients to some of the areas—leaving the spinach off, adding more salsa or spice—to customize for everyone at the table. I usually leave about a 1/3 of the pan for the kids with less greens and salsa and then pile it on for my husband and I.
To make this recipe ahead, prepare through the end of Step 2. Once the pan is cooled slightly, cover with plastic wrap and place into the fridge for up to 8 hours. Heat in a 400 degree oven for 8-10 minutes to warm through.