Mushroom and Blue Cheese Potatoes Au Gratin | Just A Pinch Recipes

Ingredients

• - 6 medium potatoes, 2 lbs, peeled if desired and sliced thinly, 6 cups (slice in a food processor)
• - 3 cups sliced cremini mushrooms
• - 1 medium onion, chopped, ½ cup
• - 2 large garlic cloves, minced
• - 2 tbsp. olive oil or cooking oil
• - ¼ cup flour
• - 1 tsp. salt
• - ¼ tsp. ground black pepper
• - 3 cups milk
• - 4 tsp. snipped fresh sage
• - 1 cup crumbled blue cheese, 4 oz