Creamy Bacon and Tomato Shells
1 T olive oil, divided
4 oz Canadian bacon, diced
1 medium red onion, halved and sliced
3 medium tomatoes, seeded and diced
1 can (8 oz) tomato sauce
3 T balsamic vinegar
3/4 tsp salt, divided
1/4 tsp pepper
1 box (12 oz) jumbo shells
1 container (15 oz) ricotta cheese
1/4 C grated Parmesan
1/4 C chopped fresh basil
Heat 2 tsp oil in a large skillet over medium-high heat. Add bacon; saute 3 minutes. Add onion and remaining 1 tsp oil; lower heat to medium. Cook, stirring frequently, 5 minutes or until onion is softened. Add tomatoes, tomato sauce, vinegar, 1/2 tsp salt and pepper. Lower heat; simmer 15 to 20 minutes or until sauce is thickened.
Meanwhile, cook shells in a large pot of lightly salted boiling water until al dent