Grease a baking sheet or line with unbleached parchment paper.

In a small glass bowl, add the mozzarella, cream cheese. Microwave on high for 30 seconds. Stir and return to microwave to melt completely.

In a small bowl, whisk together the almond flour, egg and baking powder. Stir almond flour mixture into the melted cheese mixture to fully combine. Stir in shredded cheddar.

Place dough on plastic wrap and cover. Transfer to refrigerator for 20 minutes. Preheat oven to 425 F.

Cut the dough ball into 4 pieces, then halve those pieces so you have 8 small balls. Place balls 2" apart on prepared baking sheet.

Transfer to oven and bake 10-12 minutes or until golden.

Meanwhile, reheat the cooked beef, and get the cabbage ready to assemble.

Place one slider bun on plate, top with shredded beef, cabbage and mayonnaise. Then top with another bun. Serve.