Mushrooms with Sour Cream

This is another Russian recipe I've come across several times.  The version that really caught my attention has the dish baked in the oven with a layer of cheese on top.  What's not to like about that?

Mushrooms with Sour Cream
2 medium Onions (halved then sliced)
2 to 3 tbsp Olive Oil or Canola Oil
2 10 oz packages of Fresh Mushrooms
1 oz package of Dried Mushrooms (optional)
5 or 6 Cloves of Garlic
2 tbsp All Purpose Flour
1 cup of Sour Cream
2 or 3 tbsp Fresh Dill (chopped finely)
1 1/2 cups Grated Mozzarella
1/2 to 3/4 cup Good Flavourful Cheese (I used Manchego, but Cheddar or Asiago would also be good)
1/2 to 3/4 cup Panko Breadcrumbs

• If using dried mushrooms, rehydrate them according to package instructions.  They will have a chewier texture but can add an additional layer of flavour.
• Saute the onions in the oil until slightly softened.
• Add the fresh mushrooms -- if using whole mushrooms, cut them up as desired.  I used presliced button and baby bella types.  Any interesting type of mushroom or combination will work I think.  Just don't use poisonous varieties or magic mushrooms.
•  Let the mushrooms cook for a few minutes until they start to become soft.
• If using dried mushrooms as well, add them to the mix.  I included the liquid in which they were soaked as well.
• If not using the dried mushrooms (or the liquid from them), add about a cup or so of water.
• Crush the garlic and stir it in.
• Let this simmer for about 10 or 15 minutes.
• Gently sprinkle the flour over the mixture and stir it in to thicken.  Let this simmer for a few minutes to give the flour a chance to cook.  Stir often and add additional flour if needed.  The consistency should be that of a thick stew.
• Stir in the sour cream and let simmer for another 10 minutes.
• Add the dill, then pour the mixture into a shallow baking dish or several small baking dishes.
• Combine the two cheeses with the panko and sprinkle a layer over the mushroom mixture.
• Bake at 400 for 20 to 25 minutes.  The top should be golden and almost crusty.

The mushrooms have just been added to the onions.

Ready for the fresh dill

Just out of the oven.