Rustic Fritatta

Name: Rustic Fritatta
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Cuisine: European, Italian, Mediterranean
Ingredients: 6 large eggs; 1 1/2 C baby kale; 1/2 lb fresh mozzarella, sliced into planks; 1/2 C mushrooms, sliced thinly; 1 C grape tomatoes, halved; 1 medium-sized shallot, diced; 1/4 C heavy cream; 3 garlic cloves, minced; 1 tbsp pecorino romano, grated; 1 tsp kosher salt, to taste; 1/2 tsp herbs de Provence; 1/8 tsp cracked black pepper; 1 tbsp salted butter