Mirror Lake Inn Chocolate Chip Cookies

Ever heard of the Mirror Lake Inn?

It's pretty fancy.
But the absolute best part of the couple of days I spent there were the chocolate chip cookies... they were seriously delicious. After we checked out, we were lucky enough to get the recipe! The cookies are great, but the only thing is, they come out really... flat. Delicious, no doubt, but flat, nonetheless.
Still, it's really very great if you like gooey cookies. And eating the dough raw is just as good.
I'm not sure what to do about the flatness, except maybe use all shortening next time instead of half butter and half shortening, like I did here. But I've never felt the need to change it, because I love it just so much!

Mirror Lake Inn Chocolate Chip Cookies (yields 3 dozen)
adapted from a recipe given by The Mirror Lake Inn
ingredients
1/2 cup butter
1/2 cup shortening
1 cup sugar
1/2 cup brown sugar
2 eggs
2 teaspoons vanilla
2 cups flour
1.5 teaspoons of salt
1 teaspoon baking soda
2 cups chocolate chips

directions
Preheat the oven to 350 degrees F. Grease the cookie sheets.

Combine the butter, shortening, sugar, brown sugar, eggs and vanilla with an electric mixer until fluffy.

Blend the flour, salt, and baking soda. Combine the dry mixture with the sugar mixture. Add the chocolate chips.

Drop about 1 tablespoon-sized balls of cookie dough onto the cookie sheets, and bake for 8 minutes. Remove the cookies and let cool on a cooling rack for 10 minutes.