This is one of my favorite winter casseroles based on a recipe from The Best Make-Ahead Recipe Cookbook. You can make it in one large 9x13 pan or prepare two 8x8 square pans, and bake one and freeze one for another time. To freeze, wrap casserole in plastic wrap and then cover tightly with foil and freeze for up to 3 months.
To serve, unwrap casserole and let sit at room temperature for 30 minutes, then cover with foil and bake for 30 minutes at 375F. Remove foil and continue to bake about 50-60 minutes longer, until cornbread is golden and filling is bubbly.
It helps to have everything prepped – onions chopped, beans drained, garlic minced, tomato cans opened. Once you begin, the recipe comes together quickly. Don’t start the cornbread until the filling is done and in the pan.