Bake in the preheated oven for 25-30 minutes, or until the casserole is bubbling and the top is slightly browned.
Remove from the oven and let it rest for a few minutes before cutting and serving. If desired, top with chopped fresh parsley.
Changes and Hints
Substitute diced cooked chicken or turkey for the shrimp for an alternate protein choice.
For added nutrition and taste, try adding additional veggies like peas, celery, or mushrooms.
To add a little spice, you may either pinch some cayenne pepper or dice some jalapeños.
Using a combination of cheeses, such as pepper jack and Monterey jack, may give the dish a unique taste.