Use this code:

<H1>Cooking for One</H1> <!-- display level one header -->
<OL><!-- begin ordered (numbered) list -->
<LI>Take Lean Cuisine out of fridge.
<LI>Place in microwave.
<LI>Set timer for 5 min.
</OL> <!--end ordered list -->

And get this result:

Cooking for One

  1. Take Lean Cuisine out of fridge.
  2. Place in microwave.
  3. Set timer for 5 min.