Pre-heat oven to 225 degrees.
Slice the chicken breasts into 1-inch thick strips.
Heat butter in a large skillet over medium/high heat. Once pan is hot, add chicken and saute until golden.
Transfer chicken to a casserole baking dish and add broccoli.
Heat butter in a small sauce pan and add chopped garlic. Saute for a few minutes on low-medium heat and add creme fraiche, fresh cream, chicken fond and ajvar.
Bring to a boil and then pour sauce over the chicken and broccoli.
Top with cherry tomatoes, spinach and shredded cheese.
Cover with foil and bake casserole at 225 degrees for 25 minutes.