Spinach Salad

This is easy and delish and makes a ton - I'd suggest halfing the recipe unless you are feeing 8+. Prepare dressing ahead of time and let marinate in fridge for several hours.

1 bag spinach
1 bag mixed greens
1/4 c. bacon, crumbled
1/2 lb. Swiss cheese
4 baby bella mushrooms

Poppyseed Dressing (makes a lot - only use a little and save the rest in the fridge for other salads, will last for a few weeks if stored in airtight container):
3/4 c. white vinegar
1.5 c. oil
3/4 c. sugar
1.5 tsp. salt
1 tsp. prepared mustard
1 tsp. mustard seed
1 Tbs. poppy seeds
1 small red onion (or half of a small onion, depending on how strong you like it)

Mix salad ingredients and then add desired amount of dressing and toss. Can add chicken to make this more of a main dish.