Staging mugs with coffee cake!

 My white clay mugs with satin turquoise lining, nutmeg on lower outside. Set of 4. I'm thinking of selling them for $20 each.

Blueberry Coffee Cake
Source: Fanny Farmer Boston Cooking School Cookbook, recipe revised by me.

 I used all the same ingredients, and added a cup of frozen blueberries at the last, gently mixing them into batter which is quite stiff and spreading it into a round pan (don't have a square one.)

I lowered the temp on cooking to 350 since I was using a pottery dish, and extended the time from 20 to 35 minutes cooking.  It came out jsut fine!