For the closest match to Applebee's creamy texture, use a good-quality roasted garlic Alfredo sauce (like Classico or store brand). If it's too thick, stir in 1/4-1/2 cup milk before baking.
Make sure to squeeze the spinach very dry to avoid a watery dip.
This dip reheats well in the microwave or oven (cover with foil if reheating in oven).
Variations: Some copycats use 2 cans of artichokes for more chunks, or fresh steamed spinach instead of frozen.
Nutrition (approximate per serving): High in fat/calories due to cheese and cream—enjoy in moderation!