6 roma tomatoes, sliced lengthwise 3 Tb. olive oil 2 Tb. butter 1 medium sweet onion, diced 4 garlic cloves, minced 1 Tb. fresh thyme, minced 1 (28 oz) can of crushed tomatoes 2 cups fresh basil, roughly chopped 2 Tb. dried basil 1 Tb.…