Cream butter and brown sugar in a bowl until light and fluffy. Add eggs, one at a time, beating well after each addition. Add vanilla.
Add baking soda, salt, and flour. Mix in chocolate chunks and chopped pecans.Note: For best results, use a 2 Tbsp. cookie scoop, portion dough onto a large cookie sheet and refrigerate the cookie dough balls for 2 hours before baking.
Preheat oven to 325 degrees. Bake 6 cookies at a time on each baking sheet.
Bake cookies for 13-15 minutes. Cool on the baking sheet.
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Notes
This recipe makes 44 cookies. Store cooled cookies in an airtight container.