Finely dice the mushrooms and shallot. Add olive oil to a medium skillet over medium high heat. Once hot, add in the mushrooms, shallot and dried thyme. Cook for 5 minutes or until softened. Season with salt and pepper.
4 oz mushrooms, 1 teaspoon shallot, 1 tablespoon olive oil, ½ teaspoon dried thyme, 1 teaspoon pepper, 1 teaspoon salt
Strain mushrooms into a sieve over a bowl. Stir in blue cheese crumbles.
2 oz blue cheese crumbles
Dice steak into bite sized pieces. Cook in the same skillet you used for the mushrooms for 1-2 minutes, just barely browning on all sides. Add to the sieve with the mushroom mixture.
10 oz filet mignon
Place 1-2 tablespoons of the mushroom mixture into the center of each biscuit. Bring up the edges, pinching to seal to form a ball. Place seam side down on the prepared baking sheet.
Cut 2-3 slits into the top of each biscuit, which will allow steak to escape while it is cooking. Brush with 1 tablespoon melted butter.
1 tablespoon unsalted butter
Bake for 14-16 minutes until golden brown. Remove from the oven.