01 -
Get your oven hot at 350ºF. Lightly oil a casserole dish around 10x7 inches or 9x9 inches to keep things from sticking.
02 -
If spinach is still frozen, microwave it for about 30 seconds at a time until it softens. Use a towel or cheesecloth to squeeze out extra water.
03 -
Cut the artichoke hearts into smaller chunks and slice the green onions finely.
04 -
In a big bowl, stir together softened cream cheese, mayo, and sour cream until it's smooth. Toss in spinach, artichokes, green onions, garlic powder, some Parmesan, ¾ cup of mozzarella, crab meat, salt, and pepper. Break up spinach if it's clumped together. Mix gently.
05 -
Scoop the mixture evenly into the greased dish. Sprinkle the rest of the mozzarella over the top.
06 -
Bake for about 20 minutes, or until it starts looking a bit golden. Switch to the broiler for 2–5 minutes to get that cheese bubbly and browned. Keep an eye on it so it doesn't burn.
07 -
Serve warm with crackers, bread, or crispy crostini for dipping.