Chocolate Oat Squares

As promised, the next best thing to Hobnobs. This recipe was from "Great American Home Baking."

Mix together:
3/4 c (1 1/2 sticks) butter, melted
1 1/2 c flour
1 1/2 c old-fashioned rolled oats
1 c brown sugar
1/2 tsp baking soda
1/2 tsp salt
Press into greased 9x13" pan. Bake until lightly browned, about 15 minutes at 350*. (That's 160* C on my convection oven) Leave to cool while you prepare topping.
Melt 8 oz semisweet chocolate, chopped (I use about 1 1/3 c chocolate chips); add 1/4 c heavy cream (I use whole milk); stir smooth; spread over cookie.
If eaten hot it is gooey and you need a spoon. After it cools you can hold a piece in your hand to eat it. (The recipe says to cool cookie completely before frosting, then chill 30 min to set the chocolate. I never do this.)

I tried this once at my grandma-in-law's house, using self-rising flour instead of the flour and soda, and it was NOT the same at all.
That's about all the tips I can think of. :-)