1: Heat butter in a pan, add garlic and saute it for a few seconds.
2: Add thyme, chopped broccoli, salt, and pepper and mix it well till the broccoli cooks. Keep it aside and let it cool down.
3: Add grated cheddar to the broccoli mixture. Mix it well.
4: Make pockets by slitting the chicken breast in the center lengthwise but keep the sides intact.
5: Stuff the pockets with the broccoli mixture.
6: Marinate the chicken with the ingredients mentioned for the marination. Let it marinate for an hour.
7: Heat a grill pan, add oil. Grill the chicken on both sides till grill marks appear and the chicken is cooked through.
8: Slice the chicken. Serve it hot.
