bonnie's red onion pasta with spinach

Ingredients

• 1 - box of spaghetti, enough for four people
• 1 - package frozen spinach
• - water and salt for pasta
• 1 - tablespoon olive oil for frying
• 2 - medium purple onions, thin wedge sliced
• 1 - tablespoon balsamic vinegar
• 1 - teaspoon dried leaf thyme
• 2 - cloves fresh garlic, chopped
• 1 - tablespoon of butter
• - fresh ground black pepper
• - fresh grated parmesan cheese
• - chopped green onions for garnish
• - _________________
• - optional:
• - add one can deveined shrimp, draining water into spaghetti water
• - red pepper sliced thin
• - lime wedges