When I was growing up, one of my favorite cookies, other than typical chocolate chip cookies, were a version of these. They go by many names, and there are just as many variations.
Today I took a few recipes and fiddled around a bit to make what I like.
One of these recipes that I based these on came from 1994 (the date listed on the recipe found in my recipe binder). The others were found online. One version didn’t have oats. One had more eggs. One used chocolate chips. Two used chocolate candy bars. One used only brown sugar, while the others called for a combination of brown and white sugar. The recipe below is what I actually made, and is a combination of all the recipes I reviewed today.
And … yahoo! … success! They are delicious!
1 cup butter, softened
1/2 cup brown sugar
1/2 cup sugar
1 teaspoon vanilla
1 egg yolk
1 cup flour
1 cup oats
1/4 teaspoon salt
4 chocolate bars, broken into small pieces OR 2 cups chocolate chips (*Today I used the chocolate bars.)
Heat oven to 350F.
In mixer bowl cream butter and sugars.
Add vanilla and egg yolk.
Add combined flour, oats and salt. Mix well.
Spread into a 9×13 pan either ungreased, lined with parchment paper, or lined with a silicone baking mat.
Bake for 25 minutes. (Depending on your oven, it may take up to 30 minutes, but be careful not to over bake!!!)
Remove from oven and distribute chocolate on top of warm cookie base.
Turn off oven.
Return pan to oven for 1 or 2 minutes.
Remove from oven and use a spatula to spread the chocolate over the cookie base.
Wait 30 minutes, then cut into bars.