Beat butter at medium speed with an electric mixer 2 to 3 minutes or until light and fluffy. Add sugar, beating well. Add eggs and vanilla, beating until blended.
Combine oats and next 3 ingredients; add to butter mixture, beating just until blended. Stir in chopped pecans and toffee bits.
Drop dough by heaping tablespoonfuls onto lightly greased baking sheets.
Bake at 375° for 10 minutes. Cool on wire racks.
Note: For testing purposes only, we used Hershey's Heath Bits O' Brickle Almond Toffee Bits.