On 12/4/17 we walked to Denny's which was little walk from our hotel. We had been here at least two times prior for breakfast and had great service and food. We ordered our breakfast and we waited for the food. Once our order was served one person in our group noticed that her pancakes tasted funny. She had ordered white chocolate and raspberry pancakes, as she cut into the pancakes and started to eat them she tasted pecans in the pancakes. As she started to look into what she was served the noted that the raspberry's were somewhat moldy. She stopped eating her food and called over the server. She spoke quietly to the server and told them about what she found. As the rest of the table listened the server just walked away without a word. We figured that they would bring back a Manager to speak with us. We then watched as the server walked past us several times only to came back to the table to drop off the check and again to walk away. We then picked up the check to go to the register to pay. We thought someone would speak to us to check on what was found, no one spoke to us before we left or took any info on the issue. We were disappointed to say the least in their professionalism.