01 -
Preheat oven to 425°F (220°C).
02 -
Remove mushroom stems and chop them finely.
03 -
In a saucepan over medium heat, cook ground beef, onion, and garlic until the beef is no longer pink. Drain the excess fat.
04 -
Stir in chopped mushroom stems, 1 tablespoon of butter, bread crumbs, salt, and pepper. Cook for 5 minutes, stirring frequently.
05 -
Remove the pan from heat and stir in the heavy cream.
06 -
Dip the mushroom caps in the melted butter and stuff them generously with the beef mixture.
07 -
Arrange stuffed mushrooms in a baking dish and sprinkle with chili powder.
08 -
Bake in the preheated oven for 20-25 minutes until golden and cooked through.