The Big Kahlua Vanilla Cookie

2 cups flour
1/2 teaspoon salt
1/2 teaspoon baking soda
3/4 cup butter, melted completely
1/4 cup Kahlua (or less)
1 cup brown sugar, firmly packed
1/2 cup white sugar
2 egg yolks, slightly beaten or 1 egg, slightly beaten
2 cups vanilla chips (or chunks)

Preheat oven to 350°F.
Grease a foil-lined cookie sheet.
Sift flour, baking soda and salt.
Melt butter (don't let it get cool), add kahlua.
Add sugars and beat well; add egg yolks, beat until very well blended.
Mix in flours on low speed until just blended.
Add vanilla chips or chunks.
Cover and chill for a minumum of 4-24 hours.
Drop by very heaping tablespoonfuls onto greased sheet, leaving 3" space between cookie dough.
Bake for 10-12 minutes, or until cookies are brown around the edges and baked to desired doneness.