Creamy Lobster Shrimp Stuffed Shells

jumbo pasta shells

lobster (about 3 medium tails)

red pepper, minced

onion, minced

butter plus ¼ cup butter, plus more for lobster

pkg. frozen shrimp, 71/90 count, thawed

Old Bay seasoning, plus more for top

Freshly grated ground pepper and salt

flour

2% milk

Large pinch of nutmeg

Few dashes hot sauce

Parmesan cheese

large egg, beaten

mozzarella, grated

ricotta cheese

Green onions, for garnish, optional