This dish evokes the rustic, hearty meals typical of the era in which 'Hamnet' is set, reflecting the everyday life and sustenance of families like the Shakespeares in Stratford-upon-Avon.
Preheat oven to 350°F.
In a large skillet, brown the lamb over medium heat. Drain excess fat.
Add onion and carrots to the skillet, cooking until softened.
Stir in peas, flour, beef broth, tomato paste, salt, and pepper. Cook until thickened.
Transfer mixture to a 9x13 inch baking dish.
Spread mashed potatoes over the top and sprinkle with cheese.
Bake for 25 minutes or until the top is golden brown.
Serve hot.