Classic tuna noodle casserole
Tater tot casserole

This hummus casserole is dead easy and super tasty:

https://www.allrecipes.com/recipe/141000/hummus-casserole/

Chicken enchilada casserole.

Layer:
Green enchilada sauce
Corn tortillas
Refried beans
Shredded cooked chicken (rotisserie chicken, leftover roast chicken, poached chicken, whatever) - plain or sprinkled with taco seasoning, your choice
Optional: sauteed sliced onions, bell peppers, zucchini, mushrooms, whatever veggies you like. Include jalapeno peppers if you like it hot.
More enchilada sauce
Shredded cheese
Repeat everything for a second layer

Bake at 350 for 30-45 minute until it's all bubbly. Works in a crockpot too, layer it all in the pot and cook on low for 4-6 hours.

Same person who posted the crockpot idea- looking for your favorite easy casseroles! Tomato and pepper free please