Spinach salad with warm bacon dressing

This comes from another blogger, The Pioneer Woman.

Ingredients

• 3 whole Eggs
• 7 slices Thick Cut, Peppered Bacon
• 1 whole Red Onion, Small
• 1 package Mushrooms, White Button
• 8 ounces, weight Baby Spinach, Washed Dried And Stems Removed
• 3 Tablespoons Reserved Bacon Grease
• 3 Tablespoons Red Wine Vinegar
• 2 teaspoons Sugar
• ½ teaspoons Dijon Mustard
• 1 dash Salt

Preparation Instructions

Cook eggs: cover with water, bring to a boil, then turn off heat and allow to sit in water for 20 minutes. Drain off water and add ice on top of eggs.
Fry bacon until crispy/chewy. Remove to a paper towel.
Remove 3 tablespoons grease and set aside.
Add 2 add’l tablespoons of grease to a separate skillet over medium heat.
Slice red onions very thinly, then add to skillet. Cook slowly until onions are caramelized and reduced. Remove to a plate and set aside.
Slice mushrooms and add them to the same skillet. Cook slowly until caramelized and brown. Remove to a plate and set aside.
Chop bacon.
Peel and slice eggs.
Make hot bacon dressing: Add 3 tablespoons bacon grease, vinegar, sugar, and Dijon to a small saucepan or skillet over medium-low heat. Whisk mixture together and heat thoroughly.
Add spinach to a large bowl. Arrange onions, mushrooms, and bacon on top. Pour hot dressing over the top; toss to combine.
Arrange eggs over the top and serve.

** Although it was delicious, next time I would use a different oil than the leftover bacon grease.