Jessica Simpson & Eric Johnson's Pre-Thanksgiving Date: Martinis & Rice Krispie Treats
11/27/2013 AT 09:35 AM EST
Jessica Simpson and fiancé Eric Johnson returned to his hometown of Boston just a few days before Thanksgiving.
On Tuesday evening, the pair visited Zebra's Bistro and Wine Bar in Medfield, Mass., just outside the city.
Simpson wore knee-high stiletto boots as she and Johnson enjoyed martinis at the restaurant, before tucking into a cheese plate, shrimp cocktail, cast iron pan-seared salmon and grilled bistecca.
As the meal came to an end, Chef Brendan Pelley brought the couple some of his tasty krispie treats.
Simpson added that it "was the perfect way to end a meal," an onlooker tells PEOPLE.
After chatting with the chef, the source adds the couple wsa "very cool, very down to earth."
A few days prior, Simpson and Johnson were spotted arriving at Boston's Logan Airport with their children, Maxwell and Ace.
– Megan Johnson