Crushing the tomatoes by hand in step 1 is an easy (and fun!) way to get kids involved in the kitchen. You can prepare this recipe ahead of time and let cool, then divide between two freezer-safe containers and freeze for up to 3 months. To reheat, transfer the frozen mixture to a saucepan or skillet along with 1/4 cup water (or 1/2 cup, if reheating entire batch). Slowly bring the greens to a simmer over medium-low heat, stirring occasionally, until hot, and season with additional salt and pepper to taste before serving.
2 Tbsp. olive oil
1 large sweet onion, peeled and finely chopped
5 garlic cloves, peeled and smashed
Salt and pepper
1 (28-oz.) can whole peeled tomatoes
1 lb. collard greens, rinsed well, stemmed, and cut into 1/2"-wide strips
2 cups low-sodium vegetable or chicken broth
1/2 tsp. red pepper flakes
1 dried bay leaf