For the Calamari Stew: Warm the olive oil over medium heat in a medium pot. Add the garlic and let cook until fragrant, about 2 minutes. Remove the garlic. Add the tomato sauce, white wine, thyme, red pepper flakes, salt, and pepper. Bring the mixture to a simmer. Add the calamari and stir to combine. Continue to cook until the mixture comes back up to a simmer, about 2 more minutes. Serve immediately with the Garlic Toasts.
For the Garlic Toast: Preheat the oven to 350 degrees F.
Meanwhile, drizzle the bread slices with olive oil. Toast until the bread is crisp and turning golden brown, about 8 to 10 minutes. Remove from the oven and rub the top of the toasts with whole garlic cloves. Serve immediately with the Calamari Stew.