Preheat oven to 350°F/180°C.
Layer the slices into a square baking dish (I used 9 x 9 inches).
Pour the sauce over the top until it fully covers the cauliflower. You will use all but about ½ - ¾ cup of the sauce. You can save the extra for another time, it’s great with pasta!
Bake at 350°F/180°C for 35-40 minutes. Check at 35 minutes by piercing it with a fork to see how cooked the cauliflower is. I like it more on the al dente side, but you can continue to cook until your preferred texture is reached. Keep in mind it will cook a little more as it is cooling.
Tips to prep ahead:
Baby/toddler food idea: