slow cooker hearty vegetable and bean soup

Ingredients

• 1 - sweet onion, diced
• 2 cloves cloves garlic, minced
• 1 medium potato, peeled and cut into 1” cubes
• 2 - carrots, peeled and sliced into 1” pieces
• 2 - stalks celery, diced
• 1 cup whole kernel corn (optional)
• - kosher or sea salt to taste
• - black pepper to taste
• 1/4 teaspoon allspice
• 1 teaspoon smoked paprika
• 1 - bay leaf
• 1/2 teaspoon crushed red pepper flakes, more or less to taste (can be substituted with cayenne pepper)
• 2 cups frozen or fresh green beans
• 4 cups vegetable broth, low sodium (chicken broth can be substituted)
• 1/4 cup vegetable broth, low sodium (chicken broth can be substituted)
• 1 can (14.5 oz.) diced tomatoes
• 2 cans cans cannellini beans, drained (navy, black, or pinto can be substituted)