I love the convenience of serving bowls with lids. Some of them you can put in the microwave, others in the oven.

 

Take the to the table to serve, and then back to the fridge (if you have leftovers)

I personally prefer the square ones with flat lids. The square shape takes less space in the fridge, and the flat lid makes it easy to stack. 

 

#1
Pyrex #1086053 Smart Essentials 8-Piece Mixing Bowl Set W/Colored Lids 

#2
Pyrex Storage 10-Piece Set 

#3
Set of 3 Thermo Dish Hot or Cold Casserole Serving Bowls with Lids 

#4
Corelle Coordinates Simple Lines 6-Piece Microwave Cookware Set 

#5
CorningWare French White 7-Piece Bake and Serve Set