Crust: On low heat to melt butter in a frying pan. When butter is melted pour round oat vanilla essence and honey into the frying pan as well. Fry it for about 5 minutes or until the oat gets a golden brownish color. Put half of the butter fried oat into the tray evenly and press it down as much as possible. Filling: Melt chocolate butter cocoa powder and honey together. Pour half of the filling on top of the oat layer. Sprinkle nuts evenly on chocolate filling. Pour other half of the chocolate filling on top. Wait until chocolate cools down a bit and evenly pour the other half of the oat on top. Spread it to cover the whole chocolate filling and press gently the oat cover down to stick in the half solid chocolate filling. Put the tray in the fridge for an hour or until its consistency becomes solid. Cut it into bars and have it for breakfast or snack.