Heat oven to 375°F. Cream butter, sugars, vanilla, and eggs. Mix flour, baking soda, cinnamon, and salt in a separate bowl until well blended; add to butter mixture.
Stir in chocolate chips. Drop dough by rounded teaspoonfuls about 2 inches apart onto a cookie sheet lined with parchment paper.
Bake until light brown, about 8 minutes. Remove from pan and cool on baking racks.
Store in an airtight container or resealable bag.
Notes
High Altitude: Add 1/4 cup of additional flour. Optional: Add 3/4 cup of chopped walnuts with the chocolate chips and bake as directed.