Creamy Spinach and Artichoke Baked Penne Rigate

Ingredients

• 1 pkg Italpasta Penne Rigate
• 2 tbsp extra virgin olive oil
• 1/4 cup onion (chopped)
• 3 cloves garlic (minced)
• 1 pkg baby spinach
• 1/4 tsp salt
• 1/2 tsp pepper
• 2 cups milk
• 8 oz plain cream cheese (cut in cubes)
• 1 tbsp dijon mustard
• 1/2 cup sour cream
• 2 jars artichoke hearts (drained, finely chopped)
• 2 tbsp capers
• 2 tbsp fresh parsley (finely chopped)
• 2 tbsp fresh chives (finely chopped)
• 1 tbsp lemon juice
• 1 1/4 cups asiago cheese (shredded, divided)