Place top oven rack in the center position and preheat oven to 400ºF.

Cook the bacon in a large cast iron skillet or other oven-safe skillet over medium heat until crispy, approximately 5-6 minutes.

Transfer bacon from skillet to a plate lined with paper towels and blot dry. Drain and discard all but one tablespoon of bacon grease from the skillet. Add radishes to the skillet and cook, stirring occasionally, until golden brown, approximately 4-5 minutes.

Place skillet in preheated oven and roast for 10 minutes. Remove from oven and stir the radishes to turn. Return to oven for another 10 minutes or until the radishes are crisp-tender and nicely browned.

Remove from oven and transfer to a serving bowl. Crumble the cooked bacon on top and stir to combine. Serve immediately with your choice of main dishes. Enjoy!