At about that age, DS's favorite cookie was "Monster Cookie" - although I never made them that big. I cut the recipe down & make them melon baller size instead of ice cream scoop size.
Monster Cookies - ¼ recipe
3 eggs
½ lb brown sugar
1 c sugar
¾ tsp vanilla
¾ tsp maple syrup
2 tsp baking soda
¼ lb butter
12 oz peanut butter
4½ c oatmeal
¼ lb chocolate chips
¼ lb M&Ms
Mix in order given. Drop by melon baller scoops & flatten. Bake for 12 min. Do not overbake. Let cool on sheet a couple of min before removing!! Very important! Yield: 10 dozen.
His other favorite was Reeses Peanut Butter Cup Cookies, but that more work than just making PB cookies with a Hershey's kiss - same basic taste.
Peanut Butter Cookies Sealed with a Kiss
2/3 c smooth peanut butter
¼ c unsalted butter, softened
1 c packed brown sugar
2 large eggs
2 tsp vanilla extract
1½ c all-purpose flour
¼ tsp salt
Sugar (for coating cookies)
40 Hershey's Kisses
1. Preheat the oven to 350 degrees. In a large bowl, beat the peanut butter, butter and brown sugar on medium speed until combined. Beat in the eggs one at a time, then add the vanilla extract. On low speed, blend in the flour and salt.
2. Shape the dough into 1-inch balls. Roll in the sugar to coat lightly. Place on ungreased baking sheets, about 2 inches apart. Bake for 12 to 15 minutes or until lightly browned.
3. Move the cookies from the baking sheets to a wire rack and immediately place an unwrapped Hershey's Kiss on the center of each cookie, pressing down so that the cookie cracks a little bit around the edge.
4. Using a metal spatula, transfer the cookies to wire racks and let them cool completely. Repeat until all the dough is used or all the Kisses are gone. Makes approximately 40 cookies.