These Irish Stout Mason Jar Beef Pot Pies are the most delicious comfort food that you'll make this season! Tender beef cubes are simmered in rich Irish stout based sauce and topped with a flaky crust.
Add flour to a large bowl and season with salt and pepper. Add beef chunks and toss well to coat the pieces in flour.
Heat 1 T. olive oil in a large dutch oven over medium heat. Brown the beef, in batches, until browned on all sides. Set aside.
Add the remaining 1 T. olive oil to the same dutch oven over medium heat. Add the onion and garlic, and sautee 3-4 minutes, until softened. Add the carrot, celery, thyme and a pinch of salt and pepper, continue to cook for 5-6 minutes.
Return the beef to the pan, along with the broth, Irish stout, tomatoes, sugar, and Worcestershire sauce. Cover and place in oven. Bake covered for 1 hour. Remove the cover, and bake for an additional 30 minutes, to allow the stew to thicken and the flavors to concentrate.
Allow the stew to cool for at least 30 minutes, or overnight.
Preheat the oven to 425 degrees.
Ladle the stew mixture into the mason jars.
Using the mason jar lid as a guide, cut squares of puff pastry about 1-inch wider than the lid.
Top the jars of stew with a square of puff pastry.
Whisk the egg yolk with 1 T. water and brush to coat the puff pastry. Place in the freezer for 15 minutes.
Bake for 15 minutes at 425 degrees, then reduce the temperature to 400 degrees and continue to bake for 5-10 minutes, until golden brown. Serve warm.