wild mushroom and spinach frata with smoked bacon

Ingredients For wild mushroom and spinach frata with smoked bacon

• 2 sm

  sweet onions sliced thin
• 1 c

  each of assorted mushrooms like oyster,shitake,and baby bella.
• 6 c

  cubed into one inch cubes, crust too, of hearty bread,like sour dough or french,italian.
• 8 lg

  eggs beaten
• 2 1/2 c

  whole milk or 1/2+1/2
• 1 1/2 c

  shredded swiss cheese
• 1 c

  shredded fontina cheese
• 1 tsp

  salt
• 1/2 tsp

  pepper
• 2 Tbsp

  olive oil
• 4 Tbsp

  butter, room temperature for the baking dish
• 1 tsp

  thyme, dried
• 8 slice

  smoked bacon cooked crispy
• 1 pkg

  spinach, fresh,torn