"Red Chicken"

To help with our friends' Caroline and Stephen's new-baby transition, we brought them some dinner this weekend and I want to post the recipes here because all are easy and all turned out pretty tasty!
First up, my mom's "red chicken" recipe:

Skinless, boneless chicken breasts (~4-5 medium sized)

Sauce:
1/2 cup ketchup
1/2 cup sherry wine
1/2 cup water
1 medium onion, minced
1 Tbsp worcester sauce
2 Tbsp butter
2 Tbsp lemon juice
2 Tbsp brown sugar

Brown chicken and transfer to a roasting pan (corningware casserole, 8x8 pan, etc)
Combine sauce ingredients in saucepan and heat to a simmer.
Pour over chicken and bake ~45min at 325.