Christmas Spinach Salad

This salad is so named because I served it to my family on Christmas day!  From the cookbook _Gooseberry Patch Christmas_. 

fresh spinach leaves
4 oz. feta, crumbled
1/2 c. walnuts, chopped
1 avocado, sliced
3 to 4 T. real bacon bits
1/2 red onion, cut into very thin slices
1/2 c. red pepper, cut into thin strips
1 tomato, chopped (I like to use halved cherry tomatoes)

Using a large bowl, fill with spinach leaves.  Add all other ingredients to bowl.  Toss salad with sweet and sour dressing. 

Dressing:
1 1/2 c. olive oil
1/2 c. red wine vinegar
3 T. sugar
1 t. chili powder
2 t. onion, grated (optional, but I like it!)
1 t. seasoned salt
garlic to taste
2 to 3 t. Worcestershire sauce

Combine in blender.  Shake before serving.  This makes more than you will use on the above salad.  Could probably halve the dressing recipe.