Chef John's Shepherd's Pie

Instructions

1. 01

   Place cubed potatoes and garlic in a large pot with enough water to cover; bring to a boil. Reduce heat to medium-low, cover, and simmer until tender, about 20 minutes.

2. 02

   Preheat the oven to 375 degrees F (190 degrees C). Meanwhile, cook ground beef in a skillet over medium heat. Stir flour into beef and drippings; stir in vegetables, beef broth, ketchup, salt, and black pepper until combined. Cook until thick, about 5 minutes, then transfer to an oven-proof casserole dish.

3. 03

   Drain potatoes and garlic; return them to the pot. Slightly smash potatoes and garlic with a potato masher; add sour cream and 1/4 cup Cheddar cheese. Mash until smooth.

4. 04

   Top beef mixture with potatoes, spreading from center of casserole to edges to form top layer. Sprinkle with remaining 1/4 cup Cheddar cheese.

5. 05

   Bake in the preheated oven until cheese melts and turns golden, 20 to 25 minutes. Cool before serving, 15 minutes.