Vegetarian Lasagna

Ingredients

• plus 1 tsp olive oil
  1 tbsp
• lasagna sheets

  fresh or dried
  9 unit
• (8.5 oz) jars sun dried tomatoes

  drained
  2 jars
• .5 cups fresh basil leaves

  packed
  1 unit
• freshly grated Parmesan cheese
  1 1/4 cups
• pancetta

  dried
  1/4 pound
• onion

  diced
  1 medium
• garlic cloves

  minced
  2 unit
• of asparagus

  trimmed and cut into 1" pieces
  4 bunches
• (15 oz) container whole milk ricotta cheese
  1 unit
• salt
  1 tsp
• freshly ground black pepper
  1/2 tsp
• shredded whole milk mozzarella cheese
  2 cups
• unsalted butter

  cut into small pieces
  2 tbsp