In a small bowl combine brown sugar with white sugar and cinnamon; pour into the glass jar then pack down.
Layer the oats then the toffee bits.
Mix together flour with baking soda and salt then place the flour mixture on top.
Close the jar.
ATTACH A CARD WITH THE FOLLOWING INSTRUCTIONS; set oven to 350 degrees F/ place all ingredients from the jar into a large bowl breaking up any lumps/ add in 1/2 cup softened butter or margarine, 1 large slightly beaten egg and 2 teaspoons vanilla; beat until blended/ drop onto greased cookie sheet and bake for 8 minutes/ yield 36 cookies.