Melt a stick of butter over medium heat and cook diced onions for 15 minutes.
Add flour to the pot, stir and cook for at least 2 minutes.
Pour in chicken stock, turn the heat to high and whisk until no lumps remain.
Add chicken base, salt and pepper and allow to thicken.
Once thick turn heat back down to medium and add a shredded rotisserie chicken, thawed corn, thawed peas and carrots. Stir and cook for 5 minutes.
Pour in heavy whipping cream, stir and serve with baked off store bought biscuits.