Mix flour, baking soda and salt in a bowl.
In a separate bowl mix together butter and both sugars in medium bowl until light and fluffy. Mix in the egg and vanilla.
Add the flour mixture, and mix until well combined. Stir in the chocolate chips.
Scoop out cookie dough on a parchment lined cookie sheet (You can scoop these close together since it will be going into the freezer for a bit). Put it in the freezer.
Mix flour, baking soda and salt in a bowl.
In a separate bowl beat together sugars and butter until light and fluffy in bowl. Then add the egg and vanilla.
Add the flour mixture, oats and raisins. Mix well.
Scoop out the oatmeal raisin cookie dough on a cookie sheet. Put it in the freezer.
After 10 minutes, take out the cookie sheet from the freezer. Using a sharp knife cut the dough balls in half.
Preheat the oven to 375 degrees Fahrenheit.
Take one half of the chocolate chip cookie dough and another half of the oatmeal raisin cookie dough; press together. (Use your finger and gently press the top surface line of both cookies, this ensures both doughs will stick together when baking.)
Return to the freezer for 5-6 minutes.
Bake the cookies for 10-12 minutes or until cookies are golden brown on the edges.
*Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs