Bring a large pot of salted water to boil. Slice the tops off of your bell peppers, remove the pith and seeds, and place in boiling water. Make sure the peppers are submerged in the water. Boil for four minutes. Remove bell peppers and set them aside.
Brown ground beef; drain. Sprinkle flour over ground beef and stir until flour is fully dissolved. Remove from heat.
Add remaining ingredients to ground beef mixture.
Stuff ground beef mixture into bell peppers, drizzle olive oil over the exposed parts of the bell peppers and bake at 350 degrees for 40 minutes.
