Hot Mushroom Bake

This is from mixingbowl.com. It was a big hit at a recent get together and makes a lot!

• Ready In: 30 mins
• Serves: 15

Ingredients

• 2 (8 ounce) packages mushrooms, chopped
• 1  onion, chopped
• 1 1⁄2 cups mayonnaise
• 10  slices bacon, cooked and chopped
• 1⁄4 teaspoon seasoning salt
• 1  cup parmesan cheese, grated
• 1 (8 ounce) package cheddar cheese, shredded

Directions

1. Pre-cook bacon.
2. Mix all ingredients together in a mixing bowl.
3. Transfer to a 1.5 quart greased casserole dish.
4. Bake at 350 for 20 minutes.
5. Serve with crackers or toasted breads.