Sante Fe Spinach Dip

1 medium onion chopped small
2 cans spinach (drained)
1 can plum tomatoes chopped small
1 can green chilies chopped and drained
8oz cream cheese
1 up half and half
10oz grated Monterey Jack cheese
1 Tbsp. red wine vinegar
2 Tbsp. sour cream
salt and pepper to taste

Saute onion in skillet over medium heat until softened.

Add tomatoes and chilies and cook 2 minutes longer.

Transfer to large bowl and stir in spinach, cheese, cream cheese, half and half and vinegar.

Season with salt and pepper.

Spoon mixture into shallow baking dish and bake at 400 degrees until dip is bubbly and top is a light brown. Approx. 35 minutes.

Top off with a spoonful of sour cream and serve with tortilla chips.