Preheat oven to 375°F. Grease and line small baking or jelly roll pan (10.5 x 15.5 inches, and 1 inch deep) with parchment paper.

Mix all of the dry ingredients from oatmeal to cream of tartar until well incorporated.

Add the melted butter to dry ingredients and mix.

Now add in the sugar and syrup, mix until well combined.

The mixture will be slightly sticky, adding butter to your hands helps to prevent a sticky mess. Pour the mixture into the greased and lined pan (make sure this pan has at least a 1/2 inch lip around the sides). Lightly press the mixture down until even across the top and about 1/2 inch thick.

Bake in 375°F preheated oven for 35 - 40 minutes or until starting to turn golden.

Remove from oven, cool for about 2 - 3 minutes, then using a knife, score halfway down and across the top into 2-inch squares. Continue to cool, then finish cutting into squares.