Heat the olive oil in a large skillet over medium-high heat. Once hot, add the cauliflower and stir to coat in the oil.
Cook for 2-3 minutes, untouched, until the cauliflower starts to slightly brown in spots. Stir and cook for another 2-3 minutes until the cauliflower is slightly tender and most pieces have picked up a bit of color. Transfer to a bowl and set aside.
Add the ground turkey and cook for 3-4 minutes on one side until a golden brown crust forms. Break the turkey apart with a spatula and fully cook.
Fold in the cauliflower, tomatoes, and pesto to combine everything.
Top with the cheese and bake for 20 minutes or until the cheese starts to turn golden brown around the edges and the tomatoes begin to wrinkle.
Garnish with fresh basil, grated parmigiano reggiano, black pepper or chili flakes, and a squeeze of lemon, if desired.
Notes
Garnishes and sides to consider: fresh basil, parmigiano regianno or parmesan cheese, lemon, grilled sourdough or focaccia, arugula salad or kale caesar salad