When researching some recipes, I came across a few that used a low and slow method for roasting nuts. A little research brought me to this page and learned that roasting nuts at high temperatures can cause the breakdown of fats found in nuts. I loved the way these came out so much that I haven't tried to roast at a higher temperature, but if you don't want the oven all day (or night), feel free to roast at 350deg.
adapted slightly from Gluten Free Mommy
1/2c + 2T tamari
Combine almonds and tamari in a bowl and stir to combine. Let almonds marinate for 30min, stirring occasionally.
Strain almonds (I reserve the tamari for another batch of almonds) and spread into a single layer on a baking sheet. You can use a Silpat if you like, but I've done it without as well. Place baking sheet in the oven and turn oven on to 170deg. Slow roast almonds for 5-7hours (or overnight if you like). Let cool, then store in a tightly sealed container.
Have you ever tried tamari almonds before??