Rustic Fritatta

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